VOTRONIC Automatic Charger - Solarlink GmbH, preiswert und ...

Solarlink GmbH 

www.solarlink.de 

Camper Caravan 

Intervention Vehicles 

Boat 

Innovative Electronics for Mobile Use 

Product Catalogue 09/10

General Information 

A Word on the Company History 

A Word on the Company History 

VOTRONIC Richard Schmelz Elektronik has been founded in Grebenhain/Germany in 1987. 

The business activities of the company are the development and production of electronic 

units for campers, caravans and boats. The first product series were tank level displays, units 

for battery control and automatic battery chargers. 

Soon, VOTRONIC expanded and extended the product range. Due to the early application 

of microprocessors, the functional features of the units were improved resulting in high 

reliability and facilitation of the production at the same time. In 1993, the products had 

been improved for professional application in ambulance cars (intervention vehicles). Since 

particular requirements of the customers were always considered, the range of customized 

units became more and more important. The great demand for VOTRONIC products involved 

an extension of the capacity of production and stock. 

The new branch rainwater recovery became interested in VOTRONIC products, and the 

second product series covering digital displays and control units for rainwater cisterns was 

established. Many years of experience in level measurement technology for campers are the 

basis for further innovations. In 1997, VOTRONIC became established as reliable supplier 

for OEM products and managed that a renowned customer became the market leader for 

the range of rainwater. 

In 1998, the progressive expansion of the company required a new legal form as well as 

a new building. In the year 2000, the quality assurance system DIN ISO 9001 was implemented 

to govern and guarantee the complex production processes and the high quality 

standard also in future. Additional products for fire fighting and special purpose vehicles 

and the third product series in the range intervention vehicles was created. 

In 2003, the course for a successful future has been set by calculated economical measures. 

Increasing competitiveness secured further market shares, and an extension of the production 

facility was required. In 2005, further investments in advanced production machinery 

allowed execution of even large orders with the proven high quality standard. 

Already in the end of the year 2005 and after a long preparatory phase in close cooperation 

with the suppliers for electronic and mechanic components the conversion of the production 

to RoHS conform products was realised. A conspicuous change in the production of 

electronic appliances was the conversion of the soldering processes to lead-free soldering. 

A lead-free production requires rethinking of the entire production chain. Therefore, additional 

production and test equipment was acquired in 2006/2007 to ensure an execution of 

the production processes, which became more difficult, in the usual high quality. 

The Company‘s Philosophy 

High quality of the produced products as well as commitment tying the customer to the 

supplier for a long time is the basis for successful business activities. Sound growth in manageable 

steps, collegial leading of the personnel, as well as involvement and motivation are 

the guidelines for success in the hart fights for competition. 

Everything we do, we are doing for the benefit and satisfaction of our 

customers. 

Our Portfolio 

All electronic units being distributed by our company are developed and produced at our 

site in Germany. 

Since development as well as production of the units is effected in our house, we are able 

to respond quickly to the customers‘ requirements. Customized units and special executions 

up to OEM products are developed in close cooperation with our customers and realised 

in due time. Further activities of our company are component insertion, as well as checking 

and production of componentries and complete units as subcontractor. 

Our Efficiency 

We deliver the complete electric equipment of a mobile home in high quality. The company 

producing these quality products formed the name VOTRONC by sound cooperation, reliability 

and by keeping the delivery schedule. Due to our well-equipped stock, a sufficient 

quantity of our products is always available. Even in boom times, we are always in a 

position to respond quickly to our customers’ requests owing to our flexible electronics 

production. Good logistics combined with a reliable forwarding agent ensure the short-term 

delivery of our products. 

Our Commitment 

Particularly today, the education of young people is a social commitment, and is thus a 

matter of course for us. The vocational training in the special field electronics ensures the 

future of our company and safeguarding of jobs in our country. Furthermore, we are active 

in the further development of the charging technology for lead batteries by our involvement 

in superior institutions, such as the DIN committee for fire protection. 

Today, about 45 employees are busy with the series production of our electronic units for 

the product ranges mobile application and rainwater recovery for delivery to renowned 

national and international customers. Known as a competent OEM supplier, special executions 

and customized units are developed and produced in large-scale manufacture.

Content 

Charging Technology 4-14 

Battery Chargers 

Our Service 

Our service department gives advice and support to you, no matter if it concerns technical 

questions regarding the VOTRONIC products or problems regarding an application in the 

vehicle. If your local garage does not dispose of the required technical equipment for your 

vehicle, do not hesitate to contact us. Our technicians are always at your disposal to resolve 

your technical problems. However, you are kindly requested to arrange a date by phone. 

We are available at any time: technik@votronic.de 

Internet: 

Our website presents the complete VOTRONIC program, clearly arranged and comprehensively 

described. Furthermore, the website informs of news and interesting details concerning 

our company and our products, as well as of the dates of shows we are participating 

in. Our catalogue can be ordered online, or it can be downloaded. 

Product Information and Details concerning Orders 

for Boat Application 

On principle, all our products are also appropriate for application in boats. The products in 

our price-list being marked with „x“ and „o“ are particularly modified for boat application, 

i. e. they are equipped with a humidity-proof electronic system etc. The price of these units is 

between 5 % or 10 % above the list price of the valid price list. When ordering these products, 

please add „1“ in front of the respective order number. 

Quality Products Made in Germany 

Only obtainable at specialized dealers 

Quality Management 

produced according to 

Batteries 15 

Voltage Transformers 16-17 

Power Inverters 

Solar Technology 18-21 

Charging Controllers 

Displays 

Level Measurement 

Technology 22-27 

Displays 

Combination Units 

Switching Components 

Transmitters 

Measuring Devices 

and Displays 28-33 

Battery Computers 

LED and LCD Modules 

Switch Panels 

Fuse Panels 

Peripheral Units 34-39 

Cutoff Relays 

Battery Controllers 

Battery Refreshers 

Circuit Distributors 

Accessories 40-43 

For Your Guidance 

In order to help you to find details, our products can be 

identified by symbols. These symbols show the preferable 

application ranges… 

Camper Caravan 

Electronic-Systeme GmbH & Co. KG 

Ilbeshäuser Straße 4 

D-36355 Grebenhain 

Phone: 00 49 (0) 66 44/96 11-0 

Fax: 00 49 (0) 66 44/96 11-20 

e-mail: info@votronic.de (General Requests) 

verkauf@votronic.de (Sales Department) 

technik@votronic.de (Technical Support) 

Internet: www.votronic.de 

Imprint 

Any indication in this catalogue corresponds to the state of the art at the time of 

publication. Subject to misprints, errors and technical modification without notice. 

Copyright VOTRONIC Grebenhain 8/08. All rights reserved. 

Design Concept and Realisation 

designbüro, 36341 Lauterbach 

Intervention Vehicles 

Boat

VOTRONIC Automatic Chargers 

Professional Chargers for Mobile Use 

Batteries and Chargers 

The battery is the central element of the vehicle’s electric system. Utmost attention has to be 

paid to it concerning maintenance and care, and, above all: It has to be charged correctly. 

This is particularly true to vehicles with two battery circuits, such as special purpose vehicles, 

ambulance cars, campers or boats, where a special auxiliary battery supplies the electric 

appliances, systems and equipment on board. The charging state of this supply battery decides, 

which electric appliance can be switched-on and how long it can be switched-on. The 

lifetime of the battery is decisively influenced by the battery type, the charging and discharging 

processes, by eventual total discharge and also by the used charging technology. 

This concerns the range of campers and boats, as well as intervention vehicles, where the 

electric equipment is very often decisive for life and limb. 

When charging a vehicle battery, it is important, that 100% output is always available and 

that the charging current and the charging voltage are kept to the correct values during 

the complete charging cycle. In keeping with the times, this can only be achieved with units 

according to advanced switch mode technology (SMT), since -in contrast to former transformer-rectifier 

units- they distinguish by complete and precise adjustment of all instabilities 

(low voltage, deviating frequency and sine curve, power failure). Due to an exactly defined 

characteristic line of charging IU1oU2, the VOTRONIC automatic chargers in switch mode 

technology allow quick and effective charging of lead-acid, gel and AGM/fleece batteries, 

treating the battery careful at the same time. This reliable concept of charging technology, 

which has emerged from the close cooperation with leading battery and vehicle manufacturers, 

can be used for a wide range of applications on the one hand, and, on the other 

hand, it can despite be adapted to the requirements of the user. 

The units are designed for installation in campers, boats, ambulance cars and special purpose 

vehicles, and they are particularly suitable for stationary installation in the industrial 

range. 

Which battery is the right one? 

Normal starter batteries are not designed for cyclic load. Thus, they cannot be recommended 

as board batteries. For the load in campers, intervention vehicles and boats we are exclusively 

offering cycle resistant batteries (see page 15). 

Which VOTRONIC charger is the right one? 

The units of series “Pb” are designed for the leisure range, such as campers and boats, 

while the professional series “VAC” is particularly adapted to the requirements in intervention 

vehicles to ensure permanent readiness for use. 

For a long time, battery manufacturers were indicating the recommendable charging capacity 

for their batteries with 10 % of the used battery capacity (Ah). 

Example: 

Nominal capacity of battery 100 Ah, 10 % of it = 10 A charging current should be supplied 

by the charger. 

Contingent on increase of comfort and more electrical consumers in the vehicle, nowadays 

a value of about 14 % is more realistic. The reason is the simultaneous supply of the consumers 

(refrigerator, lighting, TV) during battery charging, which is resulting in a reduction 

of the actual charging capacity. Consequently, this consumption has to be considered for 

dimensioning of the charger’s charging capacity by up to 40 % to achieve a sufficient and 

quick charging, treating the battery carefully at the same time. On principle, the charger 

should never be chosen “too small”, because overcharging of the battery is not possible 

and the number of consumers is increasing continuously. 

Due to their intelligent full battery recognition, VOTRONIC chargers are covering a very 

wide range of battery capacities. Further details concerning the values can be drawn from 

the unit tables. 

Apart from insufficient charging by an inappropriate charger, the total discharge should not 

be underestimated in connection with quick ageing or premature failure. Total discharge 

of a 12 V lead battery and consequently damage starts already from a battery voltage of 

less than 10.5 V. Very often, this is caused by consumers, which have not been switchedoff, 

“hidden” discharge in the mA range by tracking current in case of humidity despite of 

disconnected main switch, electromagnetic stop valves of heaters or “silent” consumers, 

such as clocks, control panels and units in stand-by mode. 

The VOTRONIC delivery program comprises different battery control units, such as battery 

computer and battery protector (protection against total discharge) to prevent an imminent 

total discharge of the supply battery. 

If a battery shall be replaced, it is recommendable to check the existing power supply 

concept and to develop an energy balance to be able to considering also consumers being 

eventually installed later. 

Following is an example for calculation of any consumer, which shall help the user to 

develop his energy balance: 

Example: 

2 Halogen lamps, 12 V (Volts)/30 W (Watts), each: 

Capacity (total) 60 W, divided by the voltage 12 V = current intensity 5 A (Amperes). 

Time of use / day in hours (h) e.g. 4 h x 5 A = 20 Ah 

This calculation has to be made for each consumer. The total capacity is the sum of all 

results. In case of lead-acid batteries, this value is multiplied by the factor 1.7, in case of 

AGM/fleece batteries, the value is multiplied by the factor 1.4, and in case of gel batteries, 

the value is multiplied by the factor 1.3. The result is the minimum nominal capacity (in 

ampere-hours Ah), the battery should have. 

Most Important Features of the VOTRONIC Automatic Chargers 

= No. of charging program adjustable 

(Type acid, gel, AGM) see page 7 

= Automatic battery regeneration 

= Power pack function (battery replacement) 

= Equalization function 

(compensation charging of the cells) 

= Connection remote control/remote indicator 

= Battery capacity (size) adjustable 

= Charging current distributor for 

one or several batteries 

= Power limit function 

(Reduction of the mains/charging capacity) 

= Silent run function (reduction at night) 

= Temperature sensor is included in 

the standard delivery 

= Temperature compensation 

= Voltage sensor (in case of very long charging cables) 

= Electronic system humidity-proof 

= Unit waterproof and dustproof 

= Protection class II

VOTRONIC IUoU Charging Function 

Quick, reliable and careful treatment of the battery 

Charging Technology 

Features of the VOTRONIC Automatic Chargers, Series Pb and VAC: 

The units are distinguished by high operating safety and permanent readiness for operation. 

High-quality charging technology and robust power electronics in connection with intelligent 

microprocessor control ensure exact observation of charging voltage rates, charging 

current rates and charging time, and the battery life is extremely extended. 

• All-automatic continuous operation, permanently ready for operation. 

• The charging voltage is exempt from peaks, and it is controlled in such a way, that 

overcharging of the batteries is excluded. Thus, trouble-free operation and simultaneous 

supply of the units being connected to the vehicle’s board mains supply is also ensured. 

• Depending on the unit type different charging programs (stored in the EEPROM) can be 

adjusted for optimum charging and conservation of charge of acid-/lead-acid, gel/dryfit 

and AGM/fleece batteries in plate technology and in round-cell technology (such as 

OPTIMA batteries). 

• Units with integrated charging current distributor are able to charge individual and 

several batteries at the same time. The higher charging capacity will be automatically 

supplied to the battery (bank) showing the lower charging state. From the same charging 

level, simultaneous charging will be effected. On request and with most of the Votronic 

chargers this built-in charging current distributor allows selection of an own charging 

program for starter batteries by means of an adjustable switch in order to ensure charging 

with the full current rate and immediate availability. Simultaneous charging of combinations 

of acid/gel/AGM batteries together with starter batteries is also possible. Even 

strongly varying capacity and charging states of the batteries are admissible, and they 

are recognized automatically by these units with integrated charging current distributor. 

• Almost all of the chargers are equipped with an auxiliary charging port “S” with current 

and voltage reduction. In case of extended stop periods, this might contribute to support 

charging and conservation of charge of the vehicle’s starter battery to ensure its starting 

capacity. 

• The full recognition of the battery includes evaluation of several criteria and ensures a 

safe and careful full charging with automatic commutation to conservation of charge. 

The units are recognizing automatically, if charging current for the battery (batteries) is 

concerned or only supply current of connected consumers. Unnecessary long charging of 

a battery, which is already fully charged, is thus avoided (gassing, battery load). 

• The simultaneous supply of connected consumers during charging and conservation of 

charge (parallel/floating operation) is implemented and will be considered by the chargers. 

For protection of the consumers, the voltage is limited during any charging mode 

and operating mode. 

• The temperature compensation (automatic adaptation of the charging voltage to the battery 

temperature) improves full charging of the weaker battery in case of low outside temperatures 

and avoids unnecessary battery load and gassing in case of summery temperatures. In 

Votronic chargers it is also adapted to the corresponding battery type/characteristic line of 

charging. For reasons of safety, a gradual reduction of the charging capacity is effected in case 

of temperatures above 45 °C, and in case of 50 °C (battery overheating), the charging current 

will be disconnected. Reconnection will be effected automatically after cooling down. 

• The automatic compensation of voltage loss on the charging cables ensures precise keeping 

of the charging voltage at the battery. Powerful unit versions allow connection of 

voltage sensor lines, which is recommendable in case of very long charging cables. 

• Short charging time and high capacity storage. 

• Safe and careful preliminary charging, even of batteries being totally discharged or 

extremely discharged. 

• In case of extended stop periods, the automatic battery regeneration being effected 

twice a week decomposes acid accumulation in the battery, which is decreasing the 

performance. 

• Clearly arranged indication of the operating state by light-emitting diodes. 

• Full charging capacity is achieved by cooling of the units by convection and by means 

of a fan with temperature and speed control. If this is not sufficient in case of very high 

temperatures (such as due to adverse installation and cooling conditions), further charging 

is attempted with gradual reduction of the capacity. 

• The silent run function ensures noise optimisation during night operation. At the touch of 

a button, the cooling fan will change to a steady low noise speed with slightly reduced 

charging capacity (reduction at night). 

• The power pack function allows continued supply of the consumers, also without battery, 

such as in case of battery replacement, maintenance or emergency operation. 

• If the individual cells of lead-acid batteries show varying charging states due to insufficient 

charging or total discharge, the equalization function effects a readjustment to the 

same charging level by means of a characteristic line of charging IUIU. Since this is a kind 

of “living cell therapy” for the battery, it should be released manually and only in case of 

need. 

• If necessary, the mains input power, and thus the charging capacity of powerful chargers, 

can be adjusted to a lower value by means of the “Power Limit” function. This allows an 

operation, even with weakly protected country current supply at campsites or Marina, as 

well as with low capacity generators. 

• The mains side of all VOTRONIC chargers is equipped with a commutation to sinusoidal 

power consumption (PFC), and they are working according to the switch mode technology 

(SMT). They cope with even strong deviations of supply voltage, mains frequency and 

sine curve and thus ensure full charging capacity under adverse conditions, even at the 

far end of a weak power supply. 

• The SMT technology supplies “true” direct current without ripple noise, power peaks etc. 

This avoids unnecessary heating of the battery and allows trouble-free operation of even 

sensitive consumers during the charging process. 

• Built-in on-board mains suppression filters ensure unproblematic parallel operation 

of dynamos, motor generators and wind-driven generators, solar systems etc. at one 

battery. 

• Intelligent microprocessor control systems using SMD technology completed by robust 

power electronics ensure high operating safety. This includes also safety timers working 

in the background, which abort the individual charging phases in case of failure (such as 

short-circuit of the cells) to produce safe conditions. 

• Unattended charging and standard protection against overload, overheating, overvoltage, 

wrong polarization, short circuit and overcharging by means of a safety relay for each 

output. By this, also back discharge of the battery in case of power failure is avoided, and 

the batteries can always remain connected to the charger. 

• Complete self-test of all unit functions, including the connected external temperature 

sensors. 

• The electronic system is protected against humidity (series VAC). 

• Solid insulated terminals allow largely dimensioned battery cables with a large crosssection. 

• The inputs and outputs of the unit are fully insulated. 

Efficiency and high reliability are achieved by application of modern SMT technology completed 

by robust power electronics. The compact design, the solid aluminium housing and 

the low weight complete the outstanding profile of the VOTRONIC chargers.


Accessories 

Suitable for Series Pb and VAC 12 V and 24 V 

Remote Indicator, Order No. 3127 

Suitable for automatic chargers of the series Pb and VAC. The green light-emitting diode 

indicates the readiness for operation of the charger and the power supply. It is connected 

by a connection cable of a length of 5 m, and it can be installed at any desired location 

with a bore hole 8 mm. 

Remote Control, Order No. 3129 

Suitable for automatic chargers of the series Pb and VAC. The remote control can be used 

to supervise the charging and to activate the silent run function (night operation). The pilot 

lamps (LED) are indicating the corresponding charging progress. The remote control is delivered 

as panel version in black design matching to the VOTRONIC modular system. 

Dimensions: (WxHxD): 47x85x16 mm. 

Delivery Scope: Connection cable, 5 m length, fastening screws, drilling jig 

VOTRONIC Temperature Sensor, Order No. 2001 

Battery temperature sensor with connection cable of 2 m length and mounting hole M8. 

Sealed for protection against environmental pollution. Suitable for all VOTRONIC Automatic 

Chargers of the series Pb and VAC as well as solar controllers of the series SR and MPP. 

General Characteristic Line of 

Charging (IUoU2): 

Examples Temperature Compensation 

1. Preliminary charging totally discharged battery, 

gentle initial charging 

2. Main charging constant, maximum charging current 

(I-Phase) 

3. Main/full charging constant charging voltage 1 

(U1-Phase) 

4. Full/conservation charging constant continuous 

charging voltage 2 (U2-Phase) 

5. Automatic battery regeneration twice week 

Charging Voltage Acid Batteries Charging Voltage Gel Batteries Charging Voltage AGM Batteries 

For temperature measurement, the temperature sensor (TS) is installed at the battery (e. g. in the centre of the battery, at the 

positive pole or negative pole by clamping it below). The temperature sensor effects an adaptation of the charging voltage 

to the battery temperature. In case of low outside temperatures, full charging is improved, and in case of high temperatures 

a protection against gassing is effected caring the battery. The sensor is connected to the charger or solar controller, which 

are checking it permanently for correct operation, order No. 2001.


General Technical Data Chargers 

Unit Execution 12 V 24 V 

Nominal Voltage (AC): 

230 V / 45–65 Hz 

Operating Voltage (AC): 

190 V – 265 V (Full Charging Capacity), Short-time (5s) 300 V 

Sinusoidal Power Factor Correction PFC (CosPhi = 1): Yes Yes 

Protection against wrong polarization/short-circuit: Yes / Yes Yes / Yes 

Overload/overtemperature protection: Yes / Yes Yes / Yes 

Parallel / floating operation for simultaneous supply of consumers: Yes Yes 

Compensation of the voltage loss on the charging cables Yes Yes 

Voltage limitation during all charging modes and programs to: 15.0 V 30.0 V 

Automatic battery regeneration: 2 x week: Yes Yes 

Charging timer: 3-fold 3-fold 

Safety timer phase I-/ U1: Yes / Yes Yes / Yes 

Safety switch per charging port: Yes Yes 

Temperature-controlled, speed-controlled fan: Yes Yes 

Temperature range: -20 to +50°C -20 to +50°C 

System of protection/protection class: IP 21 / I IP 21 / I 

Standards: 

EN60335-2-29; EN55014; EN55022 B; EN61000-3-2; EN61000-3-3; EN61000-4-2; 

EN61000-4-3; EN61000-4-4; EN61000-4-5; EN61000-4-6; EN61000-4-11; ENV50204 

Mark of conformity: CE CE 

Adjustable Charging Programs/Characteristic Lines of Charging 

The charger uses all charging programs for gentle full charging and after that for conservation 

of charge of the battery. If a temperature sensor is used, temperature compensation 

will be additionally executed, which is adapted to the battery type. The connected 

consumers are simultaneously supplied during charging. If the batteries are fully charged, 

almost the total charger current is available for the consumers without any discharge of 

the batteries. 

1 „Gel“: Charging Program for Gel Batteries, Characteristic Line IU1oU2 

Adapted to closed, gas-tight gel/dryfit batteries with determined electrolyte, which are 

generally requiring a higher charging voltage level and longer dwell times U1 to achieve 

short charging times with particularly high capacity storage and to avoid total discharge. 

Also recommended for EXIDE MAXXIMA, high-current battery in AGM filament technology. 

2 „AGM“: Charging Program for AGM/Fleece Batteries, Characteristic Line 

IU1oU2 

Adapted to charging of closed, gas-tight AGM (absorbed glass mat) batteries and batteries 

in lead-fleece technology requiring a particularly high level U1 with adapted dwell times 

for full charging and after that a moderate level U2 for conservation of charge (round cell 

and plate technology). 

3 „DIN 0510“: Charging Program for Lead, Acid/Lead-Acid Batteries, 

Characteristic Line IU1oU2 

General characteristic line DIN for charging and conservation of charge of open and closed 

lead storage batteries with removable cell plugs and possibility of acid level control and 

acid level correction (maintenance). Also suitable for recently developed, closed battery 

types (low-antimonous, with lead-silver alloy, calcium etc.) with low and very low water 

consumption. 

Allows short charging times with high level U1, high charging factor and high acid mixing, 

even during stationary application (acid accumulation) of “wet” drive, lighting, solar, 

heavy-duty and standard batteries. 

4 „UNIVERSAL“: Charging Program for Lead, Acid/Lead-Acid Batteries: 

Characteristic Line IU1oU2oU3 

Universal program for charging and conservation of charge of acid batteries in vehicles 

(mixed operation mobile/stationary). Still offers short charging times, good charging factor 

and good acid mixing with average level U1 for open and closed, low-maintenance, 

maintenance-free standard, drive, lighting, solar and heavy-duty batteries. 

5 „MOTOR“: Charging Program for Lead, Acid/Lead-Acid Batteries, 


Characteristic line similar to dynamo/generator for mobile application (acid accumulation) 

with particularly low maintenance (battery gassing, water consumption). Charging and 

conservation of charge of starter batteries in intervention vehicles, according to a customary 

suggestion of the Standard Committee Fire Protection (FNFW). For conventional, 

standard starter batteries, starter batteries being “absolutely maintenance-free”, “maintenance-free 

according to EN”, “maintenance-free according to DIN”, “maintenance-free”, 

“low-maintenance”. 

For Fire Fighting Vehicles: Charging Programs for Charging of Starter and 

Auxiliary Batteries according to DIN 14679: 2008-03 

6 „L“: Closed Acid/Lead-Acid Batteries with Water Consumption 

L = low according to DIN EN 50342-1, characteristic line IUoU2 

Characteristic line with average level U1 for acid batteries for chargers being installed in 

the vehicle or external chargers at a permanent location. 

7 „VL“: Closed Acid/Lead-Acid Batteries with Water Consumption 

VL = very low according to DIN EN 50342-1, characteristic line IUoU2 

Characteristic line with high level U1 for acid batteries for chargers being installed in the 

vehicle or external chargers at a permanent location. 

8 „Fleece“: Closed Batteries (VRLA) with AGM/Fleece Technology, 


Characteristic line for AGM batteries for chargers being installed in the vehicle or external 

chargers at a permanent location. 

9 „Gel“: Closed Batteries (VRLA) with Gel Technology, Characteristic Line 

IU1oU2 

Characteristic line for gel batteries for chargers being installed in the vehicle or external 

chargers at a permanent location. 

10 „External“: Without allocation of the battery type, characteristic line 

IU1oU2 

Charging of the vehicle’s battery by external charger over vehicle plug in vehicle halls with 

allocated or free parking lots. Universal program for charging and conservation of charge 

of acid/gel/AGM batteries.


Series Pb – Installation – 

Automatic Charger Series Pb 

Designed for campers, boats, special purpose vehicles and industrial application 

Charging Options: 1 or 2 Supply batteries and 

1 or 2 Starter batteries 

Standard Equipment: 

• Charging programs No. 1, 2 and 4 (gel, AGM, acid) adjustable to the battery type (refer to page 7, Technical Data) 

• Outstanding charging technology (refer to page 5, Features) 

• The charging voltage is exempt from peaks, and it is controlled in such a way, that overcharging is excluded 

• All-automatic continuous operation for permanent readiness for use of the batteries 

• Precise temperature compensation of the battery (temperature sensor, order No. 2001, is required) 

• Separate auxiliary charging port “S” for support charging and conservation of charge of the vehicle’s starter battery, max. 2 A 

• Automatic battery regeneration in case of extended stop periods twice a week 

• Compensation of the voltage loss on the charging cables ensuring exact observation of the charging voltage rates 

• Intelligent microprocessor control observing the simultaneous supply of consumers 

• Separation of the batteries in case of power failure, overheating, incorrect behaviour (safety relay for each charging port) 

• Adjustable silent run function (reduction at night) 

• Power pack function allows continued operation of the consumers and preservation of data, such as in case of battery replacement 

Additional standard equipment for execution B: 

• Integrated charging current distributor with 2 main charging ports, each with max. current and output capacity 

• Charging current distributor can be switched to an own charging program for the starter battery 

• If required, the starter battery can also be charged with full charging current (short stop period of the vehicle) 

• Additional auxiliary charging port “S” for support charging and conservation of charge of a starter battery, max. 4 A 

• 4 Battery capacity rates can be adjusted (12 charging programs in total) 

• Inputs for sensor (sense) lines, which can be optionally used in case of charging cables in overlength and in case of external diode 

charging current distributors with voltage loss. 

• The mains/charging capacity can be reduced in case of low capacity or restricted power supply (power limit function) 

Additional standard equipment for execution C: 

• Further standard equipment identical with execution A and B (please observe the unit features) 

• 2 Main charging ports (A + B) with charging current distributor for 2 batteries of the same type with equal authorization 

Execution A 

Execution B


Automatic Charger Series Pb Trio 

3 Main charging ports, designed for boats, intervention vehicles and industrial application 

Charging Options: 2 Supply batteries and 1 starter battery or 

1 Supply battery and 2 starter batteries or 

3 Supply batteries or 3 starter batteries 

• Charging programs No. 1, 2 and 4 (gel, AGM, acid) adjustable to the battery type (refer to page 7, Technical Data) 

• Integrated charging current distributor with 3 main charging ports, each with max. current and output capacity for short charging times 

• For 1 or 2 starter batteries an own charging program can be adjusted at the integrated charging current distributor 

• Further standard equipment identical with execution A and B 

Unit Type Order No. Charging 

Capacity 

V/A 

Auxiliary 

Charging Port „S“ 

A 

Battery 

Capacity 

Ah 

No. of 

Charging Ports 

Charging 

Current 

Distributor 

Dimensions * 

(DxWxH) 

mm 

Weight 

g 

Execution 

12 V 

Pb 1210 SMT 2B 3103 12/10 2 25–115 1+S – 205x160x71 1250 A 

Pb 1215 SMT 2B 3105 12/15 2 38–170 1+S – 205x160x71 1250 A 

Pb 1220 SMT 2B 3107 12/20 2 50–230 1+S – 205x160x71 1300 A 

Pb 1225 SMT 2B 3109 12/25 2 60–290 1+S – 205x160x71 1300 A 

Pb 1230 SMT 2B 3116 12/30 2 75–350 1+S – 205x160x71 1400 A 

Pb 1240 SMT 3B 3118 12/40 4 75–480 2+S Yes 305x160x71 2350 B 


Pb 1260 SMT 3B 3123 12/60 2 120–660 2+S Yes 305x263x88 3800 C 

Pb 1250 SMT Trio 3138 12/50 – 88-550 3 Yes 305x160x71 2500 D 

24 V 

Pb 2412 SMT 2B 6233 24/12 2 32–160 1+S – 205x160x71 1350 A 

Pb 2416 SMT 2B 6235 24/16 2 40-200 1+S – 205x160x71 1400 A 



Pb 2430 SMT 3B 6243 24/30 2 75–350 2+S Yes 305x263x88 3800 C 

* Dimensions incl. mounting flanges, without connections 

Delivery Scope: 

Mains cable, manual 

Recommendable Accessories: Temperature sensor, order No. 2001, remote control, order No. 3129 

Remote indicator, order No. 3127, remote distributor for chargers, order No. 2074 

Execution C 

Execution D 

Option: 

Remote control


Series VAC – Installation – 

Automatic Charger Series VAC 

Adapted to intervention vehicles with strongly varying mission cycles. 

Charging Options: 2 Main charging ports for 1 Supply battery and 1 starter battery or 



• Charging programs No. 1, 2, 3 and 5 (gel, AGM, acid, start) adjustable to the battery type (refer to page 7, Technical Data) 




• Charging current distributor can be switched to a 2 nd own charging program for the starter battery 


• Additional auxiliary charging port “S” for support charging and conservation of charge of a starter battery (max. 2 A) or as signalling 

port +86 for motor locking while the vehicle is connected to mains 

• All-automatic continuous operation for permanent readiness for use of the vehicle 

• Precise battery temperature compensation, temperature sensor(s) is (are) included in the standard delivery 

• Equalization function (the characteristic line IUIU can be activated manually for compensation charging of the cells) 

• Intelligent microprocessor control observing the simultaneous supply of consumers 

• Battery regeneration in case of extended stop periods twice a week 



• Adjustable silent run function (reduction at night) 


• The electronic system is protected against humidity 

• Variable fitting position by additional unit label 

Additional standard equipment for execution B: 

• 4 Battery capacity rates can be adjusted (16 charging programs in total) 

• Inputs for sensor (sense) lines, which can be optionally used in case of charging cables in overlength and in case of external diode 


• The mains/charging capacity can be reduced in case of low capacity or restricted power supply (power limit function) 

• Additional auxiliary charging port “S” for support charging and conservation of charge of a starter battery, max. 4 A 

Additional standard equipment for execution C: 


• 2 Main charging ports (A + B) with charging current distributor for 2 batteries of the same type with equal authorization 

• Signalling port +86 for motor locking while the vehicle is connected to mains 

• Voltage compensation for external diode charging current distributor can be adjusted (+0.63 V) 

Execution A 

Execution B 

10


Automatic Charger Series VAC Trio 

3 Main charging ports, designed for intervention vehicles, the marine field and industrial application: 

Charging Options: 2 Supply batteries and 1 starter battery or 

1 Supply battery and 2 starter batteries or 


• Charging programs No. 1, 2, 3 and 5 (gel, AGM, acid, start) adjustable to the battery type (refer to page 7, Technical Data) 


• For 1 or 2 starter batteries an own charging program can be adjusted at the integrated charging current distributor 


Unit Type Order No. Charging 

Capacity 

V/A 

Auxiliary 

Charging Port „S“ 

A 

Battery 

Capacity 

Ah 

No. of 

Charging 

Ports 

Charging Current 

Distributor 

No. of 

Temp. Sensors 

Dimensions * 

(WxDxH) 

mm 

Weight 

g 

Execution 

12 V 

VAC 1210 M 3A 0412 12/10 2 25–115 2+S Yes 1 205x160x71 1250 A 

VAC 1215 M 3A 0414 12/15 2 38–170 2+S Yes 1 205x160x71 1280 A 

VAC 1220 M 3A 0416 12/20 2 50–230 2+S Yes 1 205x160x71 1300 A 

VAC 1225 M 3A 0418 12/25 2 60–290 2+S Yes 1 205x160x71 1350 A 

VAC 1230 M 3A 0422 12/30 2 75–350 2+S Yes 1 205x160x71 1450 A 

VAC 1240 M 3A 0424 12/40 4 75–480 2+S Yes 2 305x160x71 2400 B 

VAC 1250 M 3A 0426 12/50 4 88–550 2+S Yes 2 305x160x71 2450 B 

VAC 1260 M 3A 0431 12/60 2 120–660 2+S Yes 2 330x265x90 3900 C 

VAC 1250 M Trio 0428 12/50 – 88–550 3 Yes 3 305x160x71 2600 D 

24 V 

VAC 2412 M 3A 0448 24/12 2 32–160 2+S Yes 1 205x160x71 1350 A 

VAC 2416 M 3A 0449 24/16 2 40–200 2+S Yes 1 205x160x71 1450 A 

VAC 2420 M 3A 0458 24/20 4 40–230 2+S Yes 2 305x160x71 2350 B 

VAC 2425 M 3A 0459 24/25 4 46–290 2+S Yes 2 305x160x71 2400 B 

VAC 2430 M 3A 0460 24/30 2 75–350 2+S Yes 2 330x265x90 3900 C 


Delivery Scope: Mains cable, manual, 2 nd unit label, self-adhesive (execution A, B and D) 

Temperature sensor(s): 1 Pc. execution A, 2 pcs. execution B+C, 3 pcs. execution D 

Recommendable Accessories: Remote control, order No. 3129, remote indicator, order No. 3127 

Remote distributor for chargers, order No. 2074 

Execution C 

Execution D 

Option: 

Remote control 

11



Execution A 

Execution B 

Automatic Charger Series VAC-F DIN 14679 

Built-in chargers for fire fighting vehicles and intervention vehicles. 

2 Main charging ports with charging current distributor for: 1 Supply battery or 1 starter battery or 

1 Supply battery and 1 starter battery or 


The charger series VAC-F is designed for installation in the vehicle and complies with all regulations of the FNFW of the valid 

fire brigade standard DIN 14679 for charging and conservation of charge of auxiliary batteries and starter batteries in intervention 

vehicles. 

• Charging programs No. 5, 6, 7, 8 and 9 (start, gel, AGM, acid) adjustable (refer to page 7, Technical Data) 




• Trouble-free operation and simultaneous supply of the units being connected to the vehicle’s board mains supply 


• Charging current distributor output “2”, can be switched to an own charging program for the starter battery 


• Additional 3 rd auxiliary charging port “S” for support charging and conservation of charge of a starter battery 

(max. 2 A or 4 A execution B) 

• Optical and acoustical warning in case of battery failures and operating errors 

• Precise temperature compensation, temperature sensor(s) is (are) included in the standard delivery 

• Battery regeneration in case of extended stop periods twice a week 




• Manual charging start for totally discharged battery according to DIN 14679 

• Variable fitting position by additional unit label 


Unit Type 

Order 

No. 

Charging 

Capacity 

V/A 

Battery 

Capacity 

Ah 

No. of 

Charg. 

Ports 

Charg. 

Curr. 

Distrib. 

No. of 

Temp. 

Sensors 

Dimensions** 

(WxDxH) 

mm 

Weight Execution 

g 

12 V 

VAC 1215 F3A 0472 12/15 30-75 (150*) 2+S Yes 1 205x160x71 1350 A 

VAC 1230 F3A 0478 12/30 50-150 (300*) 2+S Yes 1 205x160x71 1450 A 

VAC 1250 F3A 0482 12/50 85-250 (500*) 2+S Yes 2 305x160x71 2450 B 

24 V 

VAC 2416 F3A 0492 24/16 30-80 (160*) 2+S Yes 1 205x160x71 1450 A 

VAC 2425 F3A 0496 24/25 40-125 (250*) 2+S Yes 2 305x160x71 2400 B 

*in case of stop periods of the vehicles >24 hours, acc. to DIN 14679 

**Dimensions incl. mounting flanges, without connections 


Temperature sensor(s), mains cable, manual, 2 nd unit label self-adhesive 


Automatic Charger Series VAC-F II DIN 14679 

Built-in chargers in protection class II for fire fighting vehicles and intervention vehicles. 

2 Main charging ports with charging current distributor for: 1 Supply battery or 1 starter battery or 



The charger series VAC-F II is designed for installation in the vehicle and complies with all regulations of the FNFW of the 

valid fire brigade standard DIN 14679 for charging and following conservation of charge of auxiliary batteries and starter 

batteries in intervention vehicles. The units of this series are equipped with a protective insulation (protection class II, without 

connection of a protective conductor). According to DIN 14679 they can be used for a (mains) single installation in 

the vehicle without connection of a protective conductor. The technical equipment, features and advantages, as well as the 

charging possibilities are identical with the charger series VAC-F (see above). 

12 

Unit Type 

Order 

No. 

Charging 

Capacity 

V/A 

Battery 

Capacity 

Ah 

No. of 

Charg. 

Ports 

Charg. 

Curr. 

Distrib. 

No. of 

Temp. 

Sensors 

Dimensions** 

(WxDxH) 

mm 

Weight Execution 

g 

12 V 

VAC 1215 F3A II 0473 12/15 30-75 (150*) 2+S Yes 1 205x160x71 1350 A 


24 V 


*in case of stop periods of the vehicles >24 hours, acc. to DIN 14679 

**Dimensions incl. mounting flanges, without connections 


Temperature sensor, mains cable, 2-core, manual, 2 nd unit label self-adhesive 

Recommendable Accessories: Remote control, order No. 3129, remote indicator No. 3127

VOTRONIC Automatic Charger 

Series VAC – Stationary Application – 


Automatic Charger VAC-Station 

Chargers for external charging for intervention vehicles in vehicle halls 

with permanent or variable parking lots 

Charging Options: Vehicle battery + additional consumers 

The charger series VAC-Station is suitable for application in vehicle halls and complies with all regulations of the FNFW of 

the valid fire brigade standard DIN 14679 for external charging and following conservation of charge of starter and auxiliary 

batteries in fire fighting vehicles with the exception of the protection against splash water IP21. 

• Charging programs No. 5, 6, 7, 8, 9 and 10 adjustable for all battery types (refer to page 7, General Technical Data) 

• VAC 1224-16 Station with automatic recognition and commutation to 12 V / 24 V board supply voltage 

• Automatic separation from mains of the charging connector in case of missing battery (to prevent short-circuit and 

corrosion of connector) 

• Optical and acoustical warning in case of battery failures and connection errors 





• Variable fitting position due to additional unit label (included in the standard delivery) 


• Cable Ölflex (4 m length) or helix cable (max. length 5 m), each with C-connector DIN 14690, included in the standard 

delivery. 

Unit Type 

With Cable 

Ölflex 

4 m Length 

Order No. 

With Helix 

Cable 

5 m Length 

Order No. 

Charging 

Capacity 

Battery 

Capacity 

Dimensions * 

(WxDxH) 

Weight 

without 

Cable 

g 

Ah 

mm 

12 V 

VAC 1210 Station 0572 0562 12V/10A 40-160 205x160x71 1250 

VAC 1215 Station – 0564 12V/15A 60-160 205x160x71 1250 

VAC 1220 Station** 0574 – 12V/20A 80-230 205x160x71 1300 

12 V und 24 V 

VAC 1224-16 Station 0570 0560 12V/24V/16A 70-160 205x160x71 1400 

24 V 



* Dimensions incl. mounting flanges, without connections ** Unit with 20 A charging current above the regulations of DIN 14679 


Mains cable, second unit label, manual, cable „Ölflex“ or helix cable, C-connector 


Automatic Charger VAC-Station for 12 V + 24 V - Board Mains Supply 

Waterproof and dustproof chargers (IP 65) for external battery charging for fire fighting vehicles 

in vehicle halls with universal parking lots 

Charging Options: Vehicle battery + additional consumers 

• Automatic recognition and commutation to 12 V / 24 V board supply voltage. 

• External charging and conservation of charge of the vehicle’s battery (charging program No. 5) 



• Automatic separation from mains of the charging connector in case of missing battery (to prevent short-circuit and 

corrosion of connector) 

• Compensation of voltage loss on the charging cables up to a length of 22 m 

• With cable “Ölflex” of 2 m length for further connection of C-connector DIN 14690, cable rewinder or helix cable via 

connecting box, order No. 2310 (see Accessories) 

Unit Type 

Execution 

with Cable 

Ölflex, 2 m Length 

Order No. 

Charging 

Capacity 

Battery 

Capacity 

Ah 

Dimensions * 

(WxDxH) 

mm 

Weight: 

without 

Cable 

g 

VAC 12/24-05 Station 0594 12V/24V/5A 40-140 300x230x130 5700 





Manual, cable Ölflex, 2 m 

Recommendable Accessories: Automatic cable rewinder, order No. 2312 or order No. 2314 (not 12 A) 

Optionally: Helix cable, order No. 2318, Connecting box, order No. 2310 for autom. 

cable rewinder and helix cable, charging connector for Fire fighting vehicles 

acc. to DIN 14690 (C-connector), order No. 2323 or MagCode Power System 

12V + 24V 

13



Automatic Charger VAC - Duo 

Dual Charger for intervention vehicles with 2 independent battery circuits 

Charging Options: 




• 2 Completely individual and independent charging parts in one unit 

• Charging programs No. 1, 2, 3 and 5 adjustable per charging part (refer to page 7, Technical Data) 

• 4 Battery capacity rates per charging part can be adjusted (16 charging programs in total) 

• Charging and conservation of charge of the starter battery are adjustable according to the tentative standards of the 

Committee Fire Protection (FNFW) 


• Port +86 for motor locking while the vehicle is connected to mains 

• Automatic battery regeneration in case of extended stop periods 


• Inputs for sensor lines, which can optionally be used in case of charging cables in overlength (execution without start 

bridge) 

• Separation of the batteries in case of power failure, overheating, incorrect behaviour (safety relay for each charging 

port) 


VAC-Duo Dual Charger with Integrated Start Bridge: 

• Integrated battery bridge function 200 A for emergency start of the motor, can also be remote-controlled by push-button 

• An emergency start of the motor is also possible by means of a simple push-button, e. g. from the dashboard 

• Other capacity combinations or 24 V units upon request 

With 2 

independent 

charging parts 

VAC-Duo Dual Charger, Execution without Integrated Start Bridge: 

• Inputs for sensor lines, which can be optionally used in case of charging cables in overlength or in case of external diode 


• Other capacity combinations or 24 V units upon request 

Unit Type Order No. 

with 

Start Bridge 

Function 

Order No. 

without 

Start Bridge 

Function 

Charging 

Capacity 

Battery 

Capacity 

No. of 

Temp. 

Sensors 

Output 

Motor 

Locking 

12V/0,4A 

Dimensions* Weight 

(DxWxH) 

V/A/A Ah 

mm g 

VAC 1215/15 Duo 0625 0626 12/15/15 36–170/36–170 2 Yes 305x265x90 3700 

VAC 1215/30 Duo 0628 0627 12/15/30 36–170/75–350 2 Yes 305x265x90 3700 

VAC 1220/20 Duo 0630 0629 12/20/20 50–230/50–230 2 Yes 305x265x90 3700 

VAC 1220/30 Duo 0632 0631 12/20/30 50–230/75–350 2 Yes 305x265x90 3750 

VAC 1220/40 Duo 0633 0634 12/20/40 50–230/90–480 2 Yes 305x265x90 3900 



2 Temperature sensors, mains cable, manual 

Recommendable Accessories: Remote display for VAC Duo, order No. 0699 

Remote indicator, order No. 3127 

Remote Indicator for Automatic Charger VAC-Duo, Order No. 0699 

For control of the 2 separate battery circuits of the chargers VAC-Duo. The pilot lamps (LED) are indicating the corresponding 

charging progress. The remote control is delivered as panel version in black design matching to the VOTRONIC modular 

system. Dim. (WxHxD): 47x85x16 mm. 

Delivery Scope: Connection cable, 5 m length, fastening screws, drilling jig. 

14

Batteries 

VOTRONIC Board Supply Batteries 

The following supply batteries are designed for cyclic load ensuring charging/discharging with supply of the consumers over 

a longer period, also with higher current rates and down to lower discharge. In contrast to conventional starter batteries, 

they are particularly suitable as consumer/board battery or as solar battery. 

Distinction must be made between batteries with fixed electrolyte in gel or AGM execution and the classical liquid/acid 

batteries. Gel and AGM batteries are leak-proof and absolutely maintenance-free over the complete lifetime. At the required 

charging conditions high cycle stability is achieved by both battery types. Gel batteries allow short-time very deep discharge, 

on condition that they will be recharged immediately. AGM batteries with the same dimensions have a slightly higher 

capacity and allow a short-time operation with very high charging/discharging current rates. 

The automatic VOTRONIC battery chargers and solar controllers are offering the suitable charging programs and characteristic 

lines of charging for high efficiency and longevity of the batteries. 

Execution A 

Acid Batteries 

Supply batteries in liquid acid execution with high efficiency and cycle stability for long-time consumers, inverter application 

and solar operation, mobile and stationary. The batteries distinguish by low self-discharge and low maintenance 

and they allow level control and central degassing to outside with a good price-performance payoff at the same time. 

The delivery within Germany is effected ready for use, freight prepaid, including acid filling. 

AGM Batteries 

These batteries are leak-proof, orientation-independent and absolutely maintenance-free board batteries according to the 

latest AGM technology, which means that the electrolyte is completely fixed in the glass fibre fleece. They had been developed 

for a very high cycle load for all applications, such as for long-time consumers, inverter application with high current 

rates and solar operation, mobile and stationary. On principle, these batteries are released for interiors, since an outlet to 

outside is not required. Another advantage compared with gel batteries is the higher storage capacity with the same space 

requirements. Due to the high current delivery they are also suitable for motor start. Furthermore, they distinguish by a very 

good charging current acceptance, even at cool temperatures, which might become apparent in shorter charging times or a 

higher charging state after short driving times. 

Execution B 

Gel Batteries 

Leak-proof, orientation-independent and absolutely maintenance-free board batteries in the proven gel technology, which 

means that the electrolyte is not liquid but fixed in gel. Developed for the daily consumers on board. Gel batteries distinguish 

by very high cycle loads with reserve capacity, such as in case of long-time consumers, inverter application and solar operation, 

mobile and stationary. On principle, these batteries are released for interiors, since an outlet to outside is not required. 

Gel batteries are very longevous, and they are very robust towards total discharge if charging is optimally adapted. 

Execution C 

12 Volts Order No. Nominal 

Voltage 

Capacity 

100h 

Dimensions 

(WxLxH) 

mm 

Weight 

approx. 

Execution 

Acid Board Battery 90 Ah (100h) 2385 12 V 90 Ah 247x175x190 mm 20 kg A 

Acid Board Battery 125 Ah (100h) 2386 12 V 125 Ah 353x175x190 mm 25 kg A 

AGM Board Battery 90 Ah (100h) 2388 12 V 90 Ah 287x175x190 mm 19 kg B 

AGM Board Battery 120 Ah (100h) 2390 12 V 120 Ah 332x174x213 mm 32 kg C 

AGM Board Battery 170 Ah (100h) 2391 12 V 170 Ah 482x170x242 mm 44 kg C 

Gel Board Battery 67 Ah (100h) 2393 12 V 67 Ah 278x175x190 mm 21 kg D 





Execution D 

15

VOTRONIC Sine Inverters 

Perfect Supply Voltage During Driving 

VOTRONIC Sine Inverters 

230 Volts alternating voltage like out of the socket 

When being on the road with a vehicle, nobody wants to renounce comforts. Electronic 

equipment not only improves the comfort in the leisure vehicle, but is also decisive for the 

equipment in ambulance cars or fire fighting vehicles. These electronic appliances might 

be sensitive medical equipment, computers, video and TV systems, electrical tools or the 

preferred espresso machine. Since, however, all units require 230 V supply voltage, use in 

a vehicle requires transformation of the direct current (DC) of the battery to alternating 

current (AC). The inverter takes over this task. It supplies a steady, crystal exact, sinusoidal 

alternating current of 230 V / 50 Hz, which is suitable for 230 V consumers. 

The size of the inverter is determined by the case of application. So, a coffee machine 

requires a more powerful unit than a razor. More powerful inverters require more current 

and consequently larger batteries. Usually, this fact is not considered when purchasing an 

inverter. 

Consequently, the current requirement is not determined by the size of the inverter, but by 

the size of the connected consumer. The following rough formula is applied: Capacity of the 

230 V consumer divided by 10 results in the approximate current value being taken from 

the battery. Dimensioning of the adequate battery size (Ah) can be based on the example 

for calculation on page 4. 

For your guidance, we recommend a battery capacity of about 100 Ah at 250 W (VA), while 

at least 200 Ah should be at disposal from 1000-1500 W (Ah). 

The case of application does also determine, if a sine inverter is required, or if a significantly 

more economic unit being similar to a sine inverter can be applied. An incandescent lamp 

or a hair drier does not have high requirements regarding the inverter, while units with a 

particular start behaviour, such as air conditioners, drills, vacuum cleaners or appliances 

being equipped with a sensitive electronic control (e. g. coffee makers, computers, medical 

equipment) possibly might require a sine inverter. Very often, this problem is neither 

recognizable, nor can it be drawn from the operating manual of the corresponding 230 V 

appliance! 

Further, it can not be concluded from the appearance of a designer fan that it might require 

230 V sine. To avoid making compromises or convincing the specialised dealer to take an 

appliance back, a high-quality sine inverter is always the better choice! These units supply 

a sinusoidal 230 V supply voltage, as if it came out of the socket, and thus they are suitable 

for all 230 V appliances. 

The precious battery capacity being only available within limits should not be wasted for 

the 230 V consumers, if 230 V mains voltage is at disposal via the country current connection 

at the vehicle. With the VOTRONIC Sine Inverters of type -NVS with automatic mains 

priority control, continual changing from the mains socket at the inverter (driving mode) 

to the internal 230 V vehicle socket (standstill with mains supply) is avoided. The mains 

priority control recognizes if 230 V country current is available and disconnects the inverter, 

so that the 230 V appliances at the internal vehicle sockets will be supplied with country 

current, and the battery is not discharged unnecessarily. As soon as the vehicle is separated 

from the country current, the inverter automatically (adjustable) resumes the supply of the 

230 V appliances. 

This intelligent device ensures, that 230 V alternating voltage will always be supplied to 

the sockets in the vehicle. 

Very often, the power consumption (Watts) is indicated in VA and can be drawn from the technical data or the nameplate of the 230 V consumer. 

Following some examples: 

Razor 10 VA DVD Player 30 VA Incandescent Lamp 25-100 W 

Coffee Maker 1200 VA Sat Receiver 20 VA Storage Battery Charger 50 VA 

Power Pack Laptop 75-140 VA Hair Drier 1000-1500 VA Mobile Phone Charger 30 VA 

TV 80 VA Drill 400-800 VA Vacuum Cleaner 1000-1500 VA 

Please observe, that the indicated values are always nominal values. The momentary power consumption might be three or five times higher than the indicated 

value due to e. g. starting current. 

For air-conditioners mostly the generated cooling capacity is indicated, but the required electrical capacity is lower. The choice of a suitable inverter must be 

based on the increased starting current. We recommend the following inverter for operation of air-conditioners: 

- Air-conditioners up to 1700 W cooling capacity: MobilPOWER Inverter SMI 1000 (-NVS) Sinus 

- Air-conditioners up to 2300 W cooling capacity: MobilPOWER Inverter SMI 1500 (-NVS) Sinus 

General Technical Data Sine Inverter 

Input Voltage (DC): 12V (10.5V - 15V) / 24V (21V - 30V) 

Output Voltage (AC): 

230 V pure sine 

Output Frequency: 

50 Hz, crystal stabilized 

Efficiency: > 93% 

CosPhi of the Consumers: 

≤ 1, no restriction 

Overvoltage Battery max.: 

16.0 V / 32.0 V 

Low Voltage Battery min.: 

10.5 V / 21.0 V (load-dependent, dynam.) 

Overload Protection: 

Yes 

Overtemperature Protection: 

Yes 

Fan with Continuous Temp. Control: Yes 

Power-saving Mode: 

Yes 

Remote Control: 

Yes 

Autom. Commutation to Mains (only –“NVS“): Rating max. 2300 W 

Input Country Current 230 V/AC (only –“NVS“): Socket for Cold Appliances 

System of Protection / Protection classes: IP21 / I, II 

Temperature range: -20 to +45 °C 

Ambient Conditions, Humidity of Air: 

max. 95% RH, no condensation 

Safety Regulations: EN 60950 

Mark of Conformity: CE, E Test acc. to ECE R10 Rev. 2 

(EMV/Automotive Regulations) 

16 

Recommendable Accessories: Control unit, order No. 2065, ON/OFF control unit for sine inverter, see page 41 

Additional remote control for sine inverter, order No. 2067, extension set with 2 nd remote control, see page 41

Voltage Transformers 

VOTRONIC MobilPOWER Inverter 

Sine Inverter for Mobile Use 

The VOTRONIC MobilPOWER Inverters of series SMI SINUS convert the battery voltage (12 V DC) into pure sinusoidal 230 V 

alternating voltage (AC) for operation of all appliances requiring mains supply. 

They are designed in advanced switch mode technology for continuous operation in intervention vehicles and special purpose 

vehicles, high-quality campers and in the marine field. They are of compact lightweight design, and they distinguish by 

high output capacity and low consumption at the same time. 

An intelligent control for power saving with automatic disconnection allows uninterrupted operation of powerful 230 V 

consumers, as well as of small, sensitive appliances with minimum battery consumption. Numerous integrated protective circuits, 

robust power electronics and intelligent microprocessor control ensure a very high overload capacity (starting current 

of consumers) and high operating safety, even in case of unfavourable operating conditions, in the long run. 

Depending on the fitting position, the removable control panel can be installed conveniently, or it can even be used as 

complete remote control in the cabin (connection cable of a length of 5 m is provided). 

Six light-emitting diodes indicate the operating state, as well as the instantaneous values of the range of capacity. Of course, 

the unit can also be switched-on and off by means of the remote control. 

A special feature of the series -NVS is the integrated mains priority control. As soon as country current is supplied to the 

vehicle, the mains priority control ensures automatic supply of country current to the mains sockets in the vehicle, as well 

as complete disconnection of the inverter in order to stop the power discharge from the battery. If the vehicle is separated 

from the external current, the inverter automatically resumes the supply of the 230 V consumers. 

• Output voltage in quality of mains voltage (pure sine) 

• Uncompromising, unproblematic, trouble-free operation of all the mains operated appliances, such as medical equipment, 

radio equipment, charging devices (of mobile phones, wireless transmitting sets, hand lamps, storage batteries 

etc.), laptops, computers, air-conditioners, refrigerator boxes, electric tools (drills, right angle grinders etc.), TV, SAT, TFT, 

microwave ovens, fully automatic coffee makers, hair driers, fans, lamps, vacuum cleaners, refrigerators etc. 

• The control panel can be rotated by 360 °, and it can be used as remote control (e. g. in the cabin). 

• Switch mode technology, compact, lightweight, robust and reliable, short-time high overload is admissible 

• Low current consumption, selectable power-saving mode: Continuous operation, automatic stand-by with automatic 

search for switched-on consumers, OFF 

• Automatic disconnection in case of overvoltage/low voltage of the battery, overload, overheating etc. 

• Comfort cooling fan with power control, temperature control and continuous speed control 

• Integrated mains priority control with overload protection 10 A safety cutout (only series -NVS) 

• Ready for connection, with cables 

• Suitable for air-conditioners 

• Mains priority control integrated 

Execution A 

Execution B 

Execution C 

Unit Type Order Output Capacity Own Connection Cable Dimensions * Weight Execution 

MobilPOWER No. Permanent/ Consumption Battery ** (WxDxH) 

Inverter … Sinus Short-time/Peak Off/Stand-by/ Length/Cross Section/ 

W Mains approx. W Cable Lug mm g 

SMI 300 3155 300/420/600 0 / 3 / - 2x1m/ 4mm²/ M8 160x205x71 1300 A 

SMI 300-NVS 3156 300/420/600 0 / 3 / 0 2x1m/ 4mm²/ M8 160x305x71 1800 B 

SMI 300 / 24V 6155 300/420/600 0 / 3 / - 2x1m/ 4mm²/ M8 160x205x71 1300 B 

SMI 300-NVS / 24V 6156 300/420/600 0 / 3 / 0 2x1m/ 4mm²/ M8 160x305x71 1800 B 

SMI 600 3157 600/840/1200 0 / 5 / - 2x1m/ 10mm²/ M8 160x305x71 2200 B 

SMI 600-NVS 3158 600/840/1200 0 / 5 / 0 2x1m/ 10mm²/ M8 160x305x71 2500 B 

SMI 600 / 24V 6157 600/840/1200 0 / 5 / - 2x1m/ 10mm²/ M8 160x305x71 2200 B 

SMI 600-NVS / 24V 6158 600/840/1200 0 / 5 / 0 2x1m/ 10mm²/ M8 160x305x71 2500 B 

SMI 1000 3163 1000/1400/2000 0 / 8 / - 2x1.4m/ 25 mm²/ M8 265x305x90 4900 C 

SMI 1000-NVS 3164 1000/1400/2000 0 / 8 / 0 2x1.4m/ 25 mm²/ M8 265x305x90 5100 C 

SMI 1500 3165 1500/2100/3000 0 / 10 / - 2x1.4m/ 35 mm²/ M8 265x425x90 5900 D 

SMI 1500-NVS 3166 1500/2100/3000 0 / 10 / 0 2x1.4m/ 35 mm²/ M8 265x425x90 6100 D 

* Dimensions incl. mounting flanges, without connections ** Cable included in the delivery, already installed at the unit 

Mark of Conformity: CE, E Test acc. to ECE R10 Rev. 2 (EMV/Automotive Regulations) 


Battery connection cable of a suitable cross-section, connection cable, 5 m length for 

control panel/remote control, mains cable (only -“NVS“), operating manual 

Recommended Accessories for SMI 300 and SMI 600 (protective covering of cables): Fuse Holder, order No. 2242 

Stripe fuse, 50 A, order No. 2245 (SMI 300), stripe fuse 80 A, order No. 2247 (SMI 600) 

Recommended Accessories for SMI 1000 and SMI 1500 (protective covering of cables): 

Power fuse holder, order No. 2250, Power fuse 175 A, order No. 2256 (for SMI 1000) 

Power fuse 225 A, order No. 2258 (for SMI 1500) 

High-current battery cable 25 mm², length 40 cm, order No. 2262 (for SMI 1000) 

High-current battery cable 35 mm², length 40 cm, order No. 2263 (for SMI 1500) 

Execution D 

Control panel of the 

inverter shown above , 

at the unit (rotatable by 

90 °, depending on the 

mounting position) or for 

external use as remote 

control 

17

VOTRONIC Solar Current Technology 

Free Energy 

Spending the “most beautiful days of the year” in a camper is bound up with the thought of 

freedom and independence. Away from the everyday routine, away from the narrowness of 

the city and the rules controlling the day. Leaving the worn-out paths, finding new parking 

lots and staying, where it is the most beautiful. 

When finally having found a “dream place”, nobody wants to leave already after 2 - 3 days 

in order to find a mains supply. The decision to resolve the problem by a running motor or 

petrol generator is resulting in trouble with the neighbours, and it is also insufficient for 

effective battery charging, since the duration is insufficient. However, use of the comfortable 

equipment of the vehicle is depending on the charging state of the board battery 

(batteries). 

The ideal resolution is the application of a solar current system or photovoltaic system, 

which, when being dimensioned correctly, does not only ensure the power supply of a 

camper or boat, but can be used at any place, where a power supply is missing. Nowadays, 

photovoltaic systems are widespread, and they are used for all kinds of application up to 

large network systems. 

The functional principle is always the same. In a solar cell, sunlight will be transformed into 

electric energy by means of the photovoltaic effect. Utilization of the energy is achieved by 

combining several solar cells to one solar module. More powerful systems can be realised 

by combination of several solar modules. 

This applies also to mobile application. The recovered energy will be stored in batteries to 

be available for operation of the electrical appliances during the night or in sunless times. A 

mobile solar system consists of three components: Solar module, solar charging controller 

and battery. 

The solar charging controller is the link between solar panel and battery preventing battery 

overload. To be able to store as much precious solar power as possible, the own consumption 

of the charging controller must be kept as low as possible. Furthermore, a modern 

solar charging controller should consider the different battery types during charging, and it 

should allow temperature compensated charging. 

VOTRONIC solar controllers meet these requirements and ensure effective battery charging. 

Apart from the second charging port, the control of Electrolux or Dometic refrigerators 

with AES function is possible. Optimum energy yield is achieved by two different control 

methods: The conventional shunt controller technology and the maximum power point 

(MPP) control method. 

Dimensioning of a solar system mainly depends on the energy consumption and the surface 

of the solar module. Consequently, it is particularly important to develop an energy balance 

in order to determine the total capacity of the connected consumers and thus the total 

requirement of energy per day in watt-hours (Wh). 30 % of this value must be added to 

cover battery loss and system loss. The result is the total capacity in Wh, which the solar 

modules should have at least. The solar charging controller is then chosen according to the 

capacity of the solar module. It is advisable to choose a controller of the next size up to be 

able to adding solar modules later, without having to replace the existing solar controller 

and the connection cables. 

Recommendation 

VOTRONIC Temperature Sensor, Order No. 2001 

Temperature sensor with connection cable of 2 m 

length and mounting hole M8. Sealed for protection 

against environmental pollution. Suitable for all 

VOTRONIC units and solar controllers. 

The Specialists for Professional Solar Charging Technology 

The VOTRONIC solar controllers are suitable for campers, caravans and boats, as well as for 

stationary operation in weekend houses, mountain huts etc. They are the link between solar 

module and battery, they work automatically and they ensure optimum battery charging. 

They are suitable for any type of rechargeable lead battery. 

The units are distinguished by high operating safety and permanent readiness for operation. 

High-quality charging technique combined with intelligent microprocessor control ensures 

exact observation of the charging voltage rates, charging current rates and charging times 

and allows charging of two separate batteries. The main charging port with characteristic 

line IU1oU2 can be set ideally to acid/lead-acid batteries, gel or AGM/fleece batteries. The 

battery temperature sensor (recommendable accessories, order No. 2001) for temperature 

compensation effects automatic increase of the charging voltage in case of low temperatures 

(winter operation) in order to improve and accelerate full charging of the weak 

battery. In case of summery temperatures, the charging voltage is reduced to minimize the 

load (gassing) of the battery and to extend the lifetime of gas-tight batteries (such as gel 

batteries). The second charging port is provided for support charging and conservation of 

charge of the vehicle’s starter battery in case of extended stop periods. 

The charging controllers are suitable for any solar module being commercially available, and 

they are adapted to the different capacity rates of the solar modules. Optimum energy yield 

is achieved by two different control methods: The VOTRONIC controllers SR are designed 

according to the proved shunt controller method. This method is a widespread, simple, 

reliable, and - above all - an economic control method. 

MPP controllers with maximum power point control method require an expensive design. 

But reduced charging time and higher charging current ensure an optimum yield of the 

panel capacity. The units automatically determine the optimum power yield (MPP) from 

the solar module and transform the voltage surplus from the solar module into a charging 

current increase for the battery. These processes will be measured, calculated and executed 

several times per second, thus ensuring an optimum adaptation of the solar module to the 

battery and the best possible power yield of the solar system. In contrast to conventional 

controllers, the charging current is increased by 10 - 30 %. This advantage shows particularly 

in cooler times of the year or in case of cold solar modules. 

How much energy does my solar system really supply? Is it correctly dimensioned, are the 

panels shaded or soiled or is there even an installation error? VOTRONIC offers power 

measurement units giving the answer to these questions. When being plugged into the 

VOTRONIC solar charging controllers, the desired information is given comprehensively 

and immediately. 

Features: 

• Unattended charging; standard features: protection against overcharge, overload, overheating, 

wrong polarization, back discharge of the battery (reverse current protection 

night operation) 

• 2 Battery charging ports 

• 3 Adjustable charging programs: Optimum charging of acid, gel and AGM battery types 

• Compensation of the voltage loss on the charging cables 

• All-automatic continuous operation, permanently ready for operation 

• Indication of the charging state by 2 to 4 light-emitting diodes 

• Intelligent microprocessor control according to SMD technology 

• Integrated on-board mains suppression filter ensures unproblematic parallel operation 

of mains chargers, wind- and petrol-driven generators, dynamos etc. at one battery. 

• Optimum temperature compensation, individually designed for each battery type 

(acid, gel, AGM). 

• Prepared ready for connection to VOTRONIC Solar Monitor and Solar Display 

18

Solar Technology 

VOTRONIC Solar Computer 

Power Measurement Units for the Solar System 

The VOTRONIC solar displays are designed for optimum comfort and enhanced yield of the 

solar system. Being ready for connection to the VOTRONIC solar controllers, they measure 

the actual capacity of the solar system. 

Matching to the VOTRONIC modular system, the digital displays are executed as panel version. 

Appearance and mechanics (identical height) are adapted to the other display modules. 

The small dimensions of the front panel and the particularly small mounting depth allow 

an installation at almost any location. If flush mounting of the LCD display is not desired, 

a corresponding casing is available as accessory. The units are ready for connection to the 

solar controllers. A suitable connection cable (length: 5 m) will be delivered with the unit. 

A microprocessor control measures, calculates and displays the following 

values: 

a Instantaneous solar power 0-999 W (Watts) 

b Instantaneous solar current 0-30.0 A (Amperes) 

Any geographic or atmospheric influences will be displayed immediately and unmistakable. 

The same applies to the exposure to the sun, partial shading or soiling of the 

solar modules. 

c Instantaneous voltage of the solar battery 7-32.0 V (Volts) 

Allows conclusions concerning the battery state; flashing warning signal in case of 

undervoltage and overvoltage of the battery. 

d Charged solar capacity 0-1999 Ah (Ampere-hours) 

e Charged solar energy 0-19990 Wh (Watt-hours) 

The power (Wh) being generated by the solar modules and the capacity (Ah) being 

charged into the battery will be measured, added up and displayed, even over a longer 

period (days, weeks). If it is required for purposes of statistics, each of the display units 

may be reset to “zero” at any time. 

Unit Type 

Order 

No. 

Operating 

Voltage 

V 

For VOTRONIC 

Solar Controller 

with System Voltage 

V 

Display 

Functions 

Dimensions 

(LxWxH) 

LCD Solar Monitor 1221 12 12 a, b, c 80x85x20 60 A 

LCD Solar Display 1216 12 12 a–e 80x85x20 60 B 

LCD Solar Display 6016 24 24 a–e 80x85x20 60 B 

Mark of Conformity: CE, e Test acc. to 95/94/EG (EMV/Automotive Regulations) 


Connection cable, 5 m length, fastening screws, operating manual, drilling jig 

Recommendable Accessories: Casing, order No. 2015, connection cable, 5 m length, order No. 2005 

mm 

Weight 

g 

Execution 

Execution A 

Execution B 

19

VOTRONIC Solar Current Technology 

Free Energy 

General Technical Data Solar Charging Controllers 

Unit execution 

12 V and 24 V 

Overcharge protection: 

Yes 

Characteristic line of charging: 

IU1oU2 

Reverse current protection (night operation): 

Yes 

Integrated on-board mains suppression filter, unproblematic parallel operation of chargers, dynamos, generators: 

Yes 

Protection against overload, overheating, wrong polarization: 

Yes 

Input temperature sensor, battery temperature compensation with sensor, order No. 2001: 

Yes 

Output solar display/monitor: 

Yes 

Compensation of voltage loss on the charging cables: 

Yes 

Charging timer: 

2-fold 

Ambient temperature range: -20 to +45 °C 

Ambient conditions, humidity of air: 

max. 95 % RH 

Mark of conformity: 

CE, e Test acc. to 95/94/EG (EMV/Automotive Regulations) 

VOTRONIC Solar Charging Controller according to Shunt Controller Method 

Effective battery charging for camper, caravan, boat and self-contained solar systems, 

such as in mountain huts, weekend houses etc. 

• Main charging port I: Automatic charging and conservation of charge of the (main) board supply battery. 

• Auxiliary charging port II: Recharging and conservation of charge of the vehicle’s starter battery, thus ensuring continuous starting capacity 

(not SR 75). 

• Charging programs for gel, acid/lead-acid and AGM/fleece batteries (not SR 75) 

• Indicators for operating state “Charging” and “Full”, execution C with “AES” and “Low Voltage” 

• Least own electricity consumption 

• Connection for battery temperature sensor (execution B and C), integrated temperature sensor (execution A) 

• Terminal “AES” with LED display: Automatic commutation of Dometic/ELECTROLUX refrigerators from gas operation to 

12 V-operation in case of sufficient solar power by means of “AES” (Automatic Energy Selector). 

Unit Type 

Order Battery Capacity Current Voltage Charging Terminal Connection Dimensions * Weight Execution 

No. Voltage 

V 

Solar 

Module 

Wp max. 

Solar 

Module 

A max. 

Solar 

Module 

V max. 

Current 

Batt. I / Batt. II 

A max. 

AES Solar 

Display, 

Monitor 

(WxDxH) 

mm 

g 

12 V 

SR 75 3021 12 75 4.6 25 4.6/ – – – 68x58x24 40 A 

SR 130 Duo Dig 3050 12 130 8.0 28 8/0.8 – Yes 115x71x34 120 B 

SR 200 Duo Dig 3052 12 200 13 28 13/0.8 – Yes 115x71x34 130 B 

SR 300 Duo Dig 3054 12 300 19 28 19/1.5 Yes Yes 115x71x34 140 C 



24 V 

SR 324 Duo Dig 6131 24 300 10 50 10/0.8 – Yes 115x71x34 140 B 



Manual 

Recommendable Accessories: VOTRONIC solar computer, VOTRONIC temperature sensor, order No. 2001 

20 

Execution A 

Execution B 

Execution C

Solar Technology 

VOTRONIC Solar Charging Controller in MPP Technology 

MPP (Maximum Power Point): Optimum energy yield due to charging current being increased by 10 % to 30 %! 

Effective battery charging for camper, caravan, boat and self-contained solar systems, such as in mountain huts, weekend houses etc. 

With the MPP technology the controller always determines automatically the optimum power yield (MPP) from the solar module. The voltage surplus of the solar module is transformed into 

a charging current increase for the battery, thus ensuring optimum adaptation of the solar module to the battery and best possible power yield of the solar system. 

• Main charging port I: Automatic charging and conservation of charge of the (main) board supply battery. 

• Auxiliary charging port II: Recharging and conservation of charge of the vehicle’s starter battery, thus ensuring continuous starting capacity. 

• Adjustable charging programs for gel, acid/lead-acid and AGM/fleece batteries for optimum charging results 

• Indicators for operating state “Full”, “Charging Current”, “MPP”, Low Voltage” 

• Least own electricity consumption 

• Input for battery temperature sensor for temperature compensation 

Unit Type 

Order Battery Capacity Current Voltage Charging Current Dimensions * Weight Execution 

No. Voltage 

V 

Solar 

Module 

Wp max. 

Solar 

Module 

A max. 

Solar 

Module 

V max. 

Batt. I/ 

Batt. II 

A max. 

(WxDxH) 

mm 

g 

12 V 

MPP 150 Duo Dig 3033 12 150 9.5 25 10.5/0.8 70x105x37 170 A 

MPP 225 Duo Dig. 3035 12 225 13 50 17/1.0 160x100x71 600 B 

MPP 320 Duo Dig. 3037 12 320 19 50 24/1.0 160x100x71 650 B 

MPP 420 Duo Dig. 3039 12 420 25 50 32/1.0 160x100x71 680 B 

24 V 

MPP 320/24 Duo Dig. 6136 24 320 9.5 50 12/1.0 160x100x71 620 B 

MPP 480/24 Duo Dig. 6137 24 480 14 50 18/1.0 160x100x71 670 B 



Manual 

Recommendable Accessories: VOTRONIC solar computer, VOTRONIC temperature sensor, order No. 2001 

Execution A 

Execution B 

21

VOTRONIC Level Measuring Systems 

Precise Tank Control 

VOTRONIC Tank Display System for Camper, Caravan, Boat 

Being forced to leave the nice parking lot by the sea prematurely because of an empty fresh water tank or full feces tank 

only happens once. From the establishment on the market, VOTRONIC tank display systems have proved to be successful 

due to precise measuring technology, high quality and high reliability to be able to plan the next supply or disposal station 

before. 

The VOTRONIC tank displays consist of a display unit and of a suitable measuring sensor at the tank. Only 2 cables between 

tank and display are required. Thus, the complete measuring unit is also ideal for later integration into existing systems. 

Depending on the place of installation and case of application, different measuring sensors are available for precise electronic 

measurement of the level without any parts being mechanically moved. Conventional tank transmitters according 

to the conductive measuring method (conductivity) are suitable for plastic tanks for fresh water and only up to a point for 

sewage water application. The capacitive measuring method being established later is significantly more robust and offers 

various possibilities of application. It is suitable for metal tanks and for plastic tanks, as well as for any kind of water (fresh 

water, sewage water, feces). A special execution also allows the measurement of Diesel tanks. Each measuring method is 

applied specifically for fresh water tanks, sewage water tanks, feces tanks and Diesel tanks to ensure precise measuring 

results and high operating safety. 

The measured value is sensed electronically and will be led as electric signal to the display unit by means of only 2 cables. 

The power supply to the electronic measuring instruments at the tank is effected from the display. In quiescent condition, 

the tank display is completely dead. 

It is also possible to assign 2 tanks to the display units (e. g. summer/winter operation, auxiliary tank etc.). 

Matching to the VOTRONIC modular system, appearance and mechanics (identical height) of the units are adapted to the 

other display modules. The small dimensions of the front panel and the particularly small mounting depth of only 18 mm 

allow an installation at almost any location. Storage space, which might be located behind, can be used further. 

Being specially adapted, the measuring system does not allow measuring sensors/display units of other 

brands or an operation with the VOTRONIC tank displays for intervention vehicles and fire fighting vehicles 

(page 26-27). 

Execution A 

Execution C 

Execution B 

Execution D 

Tank Displays 

for fresh water, sewage water, feces and Diesel tanks 

The VOTRONIC tank displays had been designed for precise level measuring, and they are suitable for any tank material and tank 

size. The units vary in the arrangement of the 3-colour display light-emitting diodes and in the symbols imprinted on the front panel. 

The level is indicated clearly as luminous bar. 

The display units are executed as panel version matching to the VOTRONIC modular system. The appearance (identical height) is 

adapted to the other VOTRONIC display units. They are protected against wrong polarization and overload and can be connected 

by means of plug-in type terminal screws. The free ends of the connections are executed pluggable, and they are labelled durable. 

In quiescent condition, the units are completely dead. The units will be delivered including operating manual and drilling jig for 

the furniture cutout. 

Depending on the case of application, one of the five VOTRONIC tank transmitters may be used: Tank transmitter set, tank probe, 

tank electrode, tank electrode FL, tank sensor FL or tank sensor Diesel 010. 

Please select the appropriate tank transmitter from the selection table measuring sensors on page 24 according to: 

• Tank volume 

• Tank material 

• Tank height 

• Installation possibility at the tank. 

Note: 

Each display unit can also be used for two tanks, such as interior/exterior tank, summer/winter operation, additional tank etc., by 

means of a measuring sensor with selector switch (see tables at the individual measuring sensors). 

Unit Type Order Order Operating Current Dimensions Assembly Weight Execution 

Tank Displays 

No. 

12 V 

No. 

24 V 

Voltage 

V 

Consumption 

mA 

(WxHxD) 

mm 

Dimensions 

(WxHxD) 

mm g 

Fresh Water 5212 6012 12 or 24 0-69 47x85x25 35x70x20 28 A 

Sewage Water 5213 6013 12 or 24 0-69 47x85x25 35x70x20 28 B 

Feces 5215 6015 12 or 24 0-69 47x85x25 35x70x20 28 C 

Diesel 5209 6009 12 or 24 0-69 47x85x25 35x70x20 28 D 


Delivery Scope: Plug-in type terminal screws, fastening screws, manual, drilling jig 

22

Level Measurement Technology 

VOTRONIC LCD Tank Monitor Digital 4 

The LCD Tank Monitor Digital 4 is a 4-fold tank display with graphical display of the tank levels in form of a vertical bar and 

additional indication of a percentage in high resolution. The display with background illumination can be read conveniently 

at any lighting conditions. 

A designation (“fresh water”, “sewage water”, “feces”, “Diesel”) can be assigned to each tank by easy programming. This 

allows a perfect allocation of the display in plain text, such as fresh water 1, fresh water 2, sewage water, Diesel, for each 

case of application and for each combination of tanks imaginable. It is a matter of course that the connection of only one 

or of two tanks is possible with the option of a later extension of the system, if required. 

In order to reduce the cabling effort for underfloor tanks or for a display in the living area to a minimum, the tank data of 

the measuring sensors are summarized by the tank C box and they are transmitted to the display over a digital cable (6 m, 

ready to be plugged in), including the operating voltage. Only the operating voltage 12 V and 24 V, as well as one to four 

tank sensors must be connected to the tank C box. 

The connected tank measuring sensors are only activated during the measurement in order to reduce the current consumption 

to a minimum. If not being used, they will be disconnected from mains. The automatic disconnection of display and 

illumination during extended stop periods is effected for the same reasons. 

LCD Tank Monitor Digital 4 



allow an installation at almost any location. 

• Display of a bar graph in high resolution 

• Indication of the level in % 

• Plain text tank designations, freely programmable 

• Illuminated display 

• Easy operation 

• Reduced installation expenditure 

• For 12 V and 24 V operation 

Please select the appropriate tank transmitter from the selection table measuring sensors on page 24 according to: 

Tank volume, tank material, tank height and installation possibility at the tank 

Tank C Box 

Tank Display 

4-fold graphically 

Order No. Operating 

Voltage 

Current 

Consumption 

mA 

Display 

Dimensions 

(WxHxD) mm 

Display Assembly 

Dimensions 

(WxHxD) mm 

Tank C Box 

Dimensions 

(LxWxH) mm 

Weight 

g 

LCD Tank Monitor Digital 4 1241 12V and 24V 8-75 80x85x25 65x65x20 118x71x34 190 



Display unit with illuminated graphical display, tank C box, digital cable, 6 m length, 

Fastening screws, manual, drilling jig 

Recommendable Accessories: Casing, order No. 2015, extension digital cable, 6 m length, order No. 2006 

VOTRONIC Info Panel - Double Control of Tank and Battery 

From the establishment on the market, the VOTRONIC Info Panel has been proved to be successful. It is very much in 

demand, since it takes over the most important control and switching tasks in the camper. Moreover, it is designed particularly 

compact. The unit controls the fresh water tank and sewage water tank, as well as the board battery and starter 

battery. Besides, it is equipped with a main switch for the board battery and a pump main switch for the fresh water supply. 

Of course, both units are equipped with activation control. 

Depending on the case of application, one of the five VOTRONIC tank transmitters may 

be used: Tank transmitter set, tank probe, tank sensor FL, tank electrode or tank electrode 

FL (see table measuring sensors page 24). When using the corresponding measuring 

sensors “with selector switch”, up to 4 tanks can be displayed. 

Due to the combination of units, the expenditure regarding installation and cables is 

reduced to a minimum. The connections are easily accessible, and the free ends are 

labelled and equipped with 6.3 mm flat connectors and pluggable terminal screws. In 

quiescent condition, the unit is completely dead. For 12 V and 24 V operation. 

Unit Type 

Order 

No. 

12 V 

Order 

No. 

24 V 

Operating 

Voltage 

V 

Current 

Consumption 

mA 

Switching 

Current 

Main Sw. 

max. A 

Switching 

Current 

Pump 

max. A 

Dimensions 

(WxHxD) 

mm 

Assembly 

Dimensions 

(WxHxD) 

mm 

Info Panel 5216 6111 12 or 24 0–265 16 10 200x55x25 180x47x20 92 

Weight 

g 

Info Panel 


Delivery Scope: Plug-in type terminal screws, flat connector, fastening screws, manual, drilling jig 

23

VOTRONIC Level Measuring Systems 


Execution B 

Execution A 

Fresh Water 

Sewage Water 

Feces 

Diesel 

Measuring Sensors for Tank Displays 

The tank transmitters measure the tank level, and the measured value will be led to the display unit by means of only 2 

cables. The 12 V or 24 V power supply of the tank transmitters is effected from the display. In quiescent condition, they 

are completely dead. The electronic system (IP 67) is encapsulated and frost-proof, thus being also suitable for problematic 

locations, such as at underfloor tanks! All VOTRONIC measuring sensors are working independently of pressure. Therefore, a 

falsification of the measured values in case of overpressure in the tank, pressure filling etc. is avoided. The standard delivery 

includes a protection against wrong polarization, excess voltage, short-circuit and overload. 

Measuring Sensor with Conductive Measuring Method 

Functioning: With the conductive measuring method, the tank transmitter gives a low measuring voltage rate to the medium 

(water) to be measured. The electronic system evaluates the wetted stick probes or metering points, summarizes them and 

gives an electric signal to the display unit, which is equivalent to the level. 

Only appropriate for plastic tanks! 

Please observe the below selection table measuring sensors. 

Tank Probe: Bar-type stainless steel electrodes, can be cut easily to fit to the tank height 

Mounting diameter 63 mm, flange diameter 85 mm 

Connection by means of flat connectors 

Tank Transmitter Set: 7 Stainless steel metering points with tank transmitter module 

Connection by means of terminal screws 

Only suitable for plastic tanks with a wall thickness of max. 8 mm. 

Unit Type 

Measuring sensor 

Order 

No. 

Order No. 

ditto with 

Commutator* 

Operating 

Voltage 

V 

Installation 

at the Tank 

Tank Height 

min.-max. 

cm 

Execution 

Tank Transmitter Set 2 5510 2003 12 and 24 Side Wall 10 - 40 A 

Tank Probe 1 5520 2002 12 and 24 Upper Side 10 - 40 B 


Delivery scope 1 : Flat connector, 2.8 mm, insulating bushes, fastening screws, manual 

Delivery scope 2 : 7 Stainless steel metering points with connection cable, fastening material, manual 

*A 2-pole selector switch as well as connection material and operating instructions are included in the standard delivery scope 

to be able to use the display for a second tank (such as inside/outside tank, summer/winter operation, auxiliary tank etc.) 

Selection Table Measuring Sensors ( 1 each Tank) for 12 V and 24 V Tank Displays 

24 

Display Unit 

12V 24V 

Order No. Order No. 

Fresh Water 

Tank Display 

5212 6012 

Sewage Water 

Tank Display 

5213 6013 

Feces 

Tank Display 

5215 6015 

Diesel Tank Display 

5209 6009 

Info Panel 

5216 6111 

LCD Tank Monitor 

Digital 4 

1241 1241 

Suitable Tank 

Transmitter for 

12V and 24V 

Order No. 

12V and 

24V 

Installation 

Possibility 

at the Tank 

Tank Height Tank Material 

in cm Ku = Plastic 

min. - max. Me = Metal 

Tank Volume 

Tank Transmitter Set 5510 laterally 10 40 Ku • – – – A 

Tank Probe 5520 top 10 40 Ku • • – – B 

Tank Electrode 5540 top/bottom 15 40 Ku / Me • • • – C 

Tank Electrode FL 5550 top 30 110 Ku / Me • • – – D 

Tank Sensor FL 5530 top/laterally 30 100 Ku / Me • • • – E 







T Sensor Diesel 010 5590 top 15 50 Ku / Me – – – • F 

Tank Transmitter Set 5510 laterally 10 40 Ku • – – – A 








T. Sensor Diesel 010 5590 top 15 50 Ku / Me – – – • F 

Execution


Measuring Sensor with Capacitive Measuring Method 

• Suitable for plastic and metal tanks 

• Insensitive to soiling and deposits in the water 

• No mechanically moved parts, robust fully electronic capacitive measuring method 

Functioning: With the capacitive measuring method an insulated measuring electrode and the surrounding medium (water) 

are forming an electric capacitor. With increasing level, also this “capacity” will be increased. The electronic system evaluates 

this effect by means of a small alternating voltage rate and gives an electric signal to the display unit, which is equivalent 

to the level. Apart from the continuous measurement, the further advantage of this measuring method is its deep action 

and thus the insensitiveness to soiling, deposits and solids in the tank. Depending on the type of transmitter the insulated 

measuring electrode is executed as stick probe or flexible cord probe for various installation possibilities, tank heights and 

mounting situations at the tank. 

Execution C 

Tank height 15-40 cm, adjustable 

Execution D 


Measuring Sensors for Water 

These tank sensors had been designed especially for level measuring of water and hydrous media (fresh water, sewage 

water, grey water, industrial water, feces) in metal or plastic tanks. Thus, they are universally applicable. The measuring 

electrode can be easily shortened to the height of the tank, and the precise “full” adjustment is effected by an adjusting 

device at the unit. In case of the tank electrode and the tank electrode FL also a “dry” adjustment is possible with the help 

of a scale. 

• Easy adaptation to the existing tank height 

• Linear, continuous signal of the level 


Tank Electrode: 

Tank Electrode FL: 

Tank Sensor FL: 

Unit Type 

Tank Displays 

Bar-type electrode, can be cut easily to fit to the tank height 



Flexible cord probe, can be cut easily to fit to the tank height 



Flexible cord probe, can be cut easily to fit to the tank height 

Only for tanks with cleaning aperture 

For plastic tanks: Wall thickness max. 8 mm 

Connection by means of terminal screws 

Order 

No. 

Order No. 

ditto with 

Commutator 

Operating 

Voltage 

V 

Installation at the Tank 

Tank Height 

min.-max. 

cm 

Execution 

Tank Electrode 1 5540 2040 12 and 24 Upper Side/Lower Side 15-40 C 

Tank Electrode FL 2 5550 2050 12 and 24 Upper Side 30-110 D 

Tank Sensor FL 3 5530 2030 12 and 24 Upper Side/Side Wall 30-100 E 


Delivery Scope 1+2 : Flat connector, 2.8 mm, insulating bushes, fastening screws, manual 

Delivery Scope 3 : Flexible cord probe, stainless steel conductor, fastening screws, manual 

Execution E 


Measuring Sensor Tank Sensor Diesel 

The VOTRONIC Tank Sensor Diesel has been particularly designed for level measuring of Diesel tanks in metal or plastic 

execution. It is installed at the upper side of the tank. The measuring electrode can be easily shortened to the height of the 

tank, and a precise calibration is effected at the touch of a button, separately for “empty” and “full”. 

Remark concerning functions and safety: The VOTRONIC Tank Sensor Diesel had been designed exclusively 

for operation with Diesel fuel. Other combustible or explosive media, as well as water and hydrous media, 

are not admissible. 



• Safety due to internal test procedures being executed continuously (processor control) 

• Mounting diameter 63 mm, flange diameter 85 mm 


Unit Type 

Tank Displays 

Order 

No. 

Operating 

Voltage 

V 

Installation at 

the Tank 

Tank Height 

min.-max. 

cm 

Tank Sensor Diesel 010 5590 12 and 24 Upper Side 15-50 F 


Delivery Scope: Manual, packing ring, connection cable, 1 m length 

Execution 

Execution F 


25

VOTRONIC Level Measuring Systems for Fire Fighting Vehicles 


VOTRONIC Tank Display System for Intervention and Fire Fighting Vehicles 

The VOTRONIC tank displays had been designed for precise level measuring in intervention vehicles. The display system 

consists of a tank sensor for the measurement at the tank and a separate display unit. If the standard voltage signal 0-10 V 

is used, operation of several displays at the tank sensor is also possible. On request, an extension of this system by the 

Multiswitch FW for additional switching tasks is also possible. The design of all the components is very robust, they are 

sealed water-tightly, they are suitable for 12 V and 24 V board voltage and they are completely vibration-proof. The units 

are processor-controlled and internal safety checks are continuously executed. 

IP 67 

robust 

water-tight 

vibration-proof 

IP 67 

robust 

water-tight 


Being adapted to the industrial unit signals (0-10 V or 4-20 mA), these components allow an operation 

with other brands. But an operation with the VOTRONIC tank display system (pages 22-25) for camper, 

caravan, boat is not possible. 

LED Tank Display HE Display unit with super-bright continuous light-emitting diode band 

The VOTRONIC LED Tank Display is a special development for heavy-duty use in fire fighting vehicles, and it serves for exact 

remote indication of the tank level. Being prepared for installation in display panels and equipped with two standardized 

measuring signals (0-10 V and 4-20 mA), the unit can be used for the VOTRONIC tank sensor FW and the tank sensor 

Diesel, and it can be connected to transmitters of other manufacturers. The tank level is represented by means of 10 superbright 

light-emitting diodes in form of a continuous tricolour luminous bar allowing convenient reading of the tank level. 

The display can be read exactly, even from an unfavourable angle of view and adapts itself automatically to the lighting 

conditions. A photocell controls the brightness of the display in such a way, that dazzling at night is avoided and that the 

readability is excellent, even in case of direct sunlight during the day. 

A simple parallel connection of the desired number of LED Tank Displays HE 010 allows control of the tank from several 

locations of the vehicle. Additional switching tasks can be realized by parallel connection of the switching unit VOTRONIC 

Multiswitch FW. The design of the display unit is very compact, the unit is sealed water-tightly, it is completely vibration-proof 

and it is protected against wrong polarization and overvoltage. The LED tank display HE 420 can be operated with 4-20 mA 

sensors, and it is connected to the negative pole at the input side. 

Unit Type 

Order 

No. 

Operating 

Voltage 

V 

Current 

Consumption 

mA 

Input 

Signal 

Multiswitch FW Switching unit for tank sensors 

Input Dimensions 

Resistance 

(WxHxD) 

mm 

Assembly 

Dimensions 

mm (WxHxD) 

System of 

Protection 

Weight 

g 

LED Tank Display HE 010 0242 12 and 24 3-60 0-10 V 10 kOhm 47x85x30 38x56x27 IP 67 80 

LED Tank Display HE 420 0244 12 and 24 3-60 4-20 mA 150 Ohm 47x85x30 38x56x27 IP 67 80 

Tank Display VDO 420 0251 – – 4-20 mA 120 Ohm ∅ 63x70 ∅ 52x55 IP 65 105 


Delivery Scope: Fastening Material LED Tank Display: Fastening screws, connection cable, 3-core, 1 m, manual 

Round Instrument 

Robust round instrument with continuous pointer indication and water proofness of IP65 to the front. The recommended 

tank sensor FW allows direct operation in series of several round instruments. 

The VOTRONIC Multiswitch FW converts the voltage signal 0-10 V arriving from the tank sensor into freely selectable switching 

functions. 2 Switching outputs are executed by 2 relays. Direction and height of the ON/OFF switching points can be 

chosen separately for each output. They are equipped with scales 0-100 %. Thus, they can be assigned easily to the tank 

and the required functions. 

A typical application is the pump control for the intermediate tank of a fire fighting vehicle: 

Relay 1 switches ON, if the tank level drops below 66 %, and it switches again OFF, as soon as 95 % are reached. 

Relay 2 switches ON, if a tank level of 80 % is reached, and it switches again OFF, when falling below 30 %. 

The separate 3rd output complies with the requirements of NFPA / USA, and it is permanently factory-adjusted to ON = 33 

% and OFF = 35 % as alarm output. It supplies a time-limited alarm signal (duration: max. 1 minute) when dropping below 

the level. Also at activation, the output will be activated for a short time for operational check. 

• Internal and switching status check of the 3 outputs (on/off) by light-emitting diodes 

• Check of the input signal Empty/Full by two light-emitting diodes. 

• Protection against wrong polarization and overvoltage, sealed electronic system, absolutely humidity-proof 

• 2 Relay outputs: potential-free change-over contacts, max. 12 V-24 V/5 A 

• 1 Alarm output: NPN transistor switching on ground side, overload-proof, max. 12 V-24 V/ 0.5 A 

Unit Type 

Order 

No. 

Operating 

Voltage 

Current 

Consumption 

Input 

Signal 

System of 

Protection 

Dimensions * 

(WxDxH) 

Weight 

Multiswitch FW 0265 12 V and 24 V 5 - 95 mA 0-10 V IP 67 98x64x38 mm 200 g 

26 


* Dimensions without connections 

Delivery Scope: Manual


Measuring Sensor Tank Sensor FW 

The VOTRONIC Tank Sensor FW had been developed for level measuring of water and hydrous media in metal and plastic 

tanks of fire fighting vehicles. The sensor is installed outside at the tank top or near the tank. Only the flexible measuring 

probe has to be hung up in the tank itself. 

Dependent on the level, the sensor supplies linear continuous electrical unit signals (voltage signal 0 - 10 Volts or current 

signal 4-20 mA) for connection of various display and evaluation units, such as the VOTRONIC LED Tank Display HE, the 

VOTRONIC Multiswitch FW, pointer indicators or external units, such as board computers etc. The sensor can be used for a 

total of up to 4 LED Tank Displays HE 010 and 1 switching unit Multiswitch FW for various switching tasks. 



• Simple calibration, which can be adjusted freely and separately for empty and full level 

• Independent of pressure, no falsification of measured values in case of overpressure, pressure filling etc. 


• Protection against wrong polarization, overvoltage, short-circuit and overload 

• The electronic system is sealed absolutely waterproof and vibration-proof 


• Output signal voltage 0-10 V: load min. 1 kOhm, three-wire system, or 

commutable to output signal current 4-20 mA: load max. (UB-7 V), 20 mA, two-wire system 

IP 67 

robust 

water-tight 


Unit Type 

Order 

No. 

Operating 

Voltage 

V 

Current 

Consumption 

mA max. 

Signal 

Output 

0-10V 

Signal 

Output 

4-20mA 

Tank Height 

min. - max. 

cm 

System of 

Protection 

Dimensions * 

(WxDxH) 

mm 

g 

Tank Sensor FW 120 0256 12 und 24 30 Yes Yes 40 - 120 IP 67 98x64x38 180 

Tank Sensor FW 240 0258 12 und 24 30 Yes Yes 80 - 240 IP 67 98x64x38 180 

Weight 


Delivery Scope: Manual, cord measuring probe, complete with holding eyelet 

* Dimensions without connections 

Measuring Sensor Tank Sensor Diesel 

The VOTRONIC Tank Sensor Diesel has been particularly designed for level measuring of Diesel fuel tanks in metal or plastic 

execution. It is installed at the upper side of the tank. The measuring electrode can be shortened easily to the height of 

the tank. 

The sensor supplies electrical unit signals (voltage signal 0 - 10 Volts or current signal 4-20 mA) for connection of various 

display and evaluation units, such as the VOTRONIC LED Tank Display HE, the VOTRONIC Multiswitch FW, pointer indicators 

or external units, such as board computers etc. The sensor can be used for a total of up to 4 LED Tank Displays HE 010 and 

1 switching unit Multiswitch FW for additional switching tasks. 

IP 67 

robust 


Remark concerning functions and safety: The VOTRONIC Tank Sensor Diesel had been designed exclusively 

for operation with Diesel fuel. Other combustible or explosive media, as well as water and hydrous media, 

are not admissible. 



• Simple calibration, which can be adjusted separately for empty and full level at the touch of a button 

• Independent of pressure, no falsification of measured values in case of overpressure, pressure filling etc. 


• Protection against wrong polarization, overvoltage, short-circuit and overload 

• The electronic system is sealed absolutely tight and vibration-proof 


• Output signal voltage: 0-2.3 V or 0-10 V, load min. 1 kOhm, three-wire system 

• Output signal current: 4-20 mA, load max. (UB-7 V), 20 mA, two-wire system 

Unit Type 

Order 

No. 

Operating 

Voltage 

V 

Current 

Consumption 

mA max. 

Signal 

Output 

0-2.3 V 

Signal 

Output 

0-10 V 

Signal 

Output 

4-20 mA 

Tank Height 

min–max 

cm 

System of 

Protection 

Built-in ∅/ 

Flange ∅ 

mm 

g 

Tank Sensor Diesel 010 5590 12 and 24 15 Yes Yes – 15-50 IP 67 63/85 200 

Tank Sensor Diesel 420 5591 12 and 24 20 – – Yes 15-50 IP 67 63/85 200 

Weight 


Delivery Scope: Manual, packing ring, connection cable, 1 m length 

27

VOTRONIC Measuring Units and Switch Panels 

Controlling - Switching - Protecting 

VOTRONIC Modular System - Digital Display Units and Switch Panels 

No matter if refilling the tank or checking the supply battery, the VOTRONIC digital measuring 

and display units always give detailed information. And this is exactly the requirement, 

which has to be met by a good instrument in a vehicle. Because the most important thing 

is the detailed and comprehensive information at a central location. At any time. 

From the establishment on the market, VOTRONIC instruments and switch panels in campers 

and special purpose vehicles are very much in demand. The big success is based on high 

quality, convenient arrangement, facilitated operation and the reliability being a byword 

for VOTRONIC. 

Since the appearance of technical equipment can also be an enrichment for a camper, our 

instruments are of elegant design: Black high-polish plastic front panels with imprint in 

white/grey are giving a noble touch and make the units matching to every interior fitting. 

VOTRONIC offers two series of models including a product mix of control and display units 

being completed by several switch panels. Whatever your individual desire or requirement 

may be, you will always find the suitable unit or unit combination. It doesn’t make any difference, 

if the vehicle shall be equipped with only one instrument or if it shall be equipped 

completely. The units can be operated independently, and they can be extended to a complete 

control and supervision system. 

Developed by practicians for practicians, all instruments are designed for easy assembly and 

installation. An identical height, the possibility of retrofit, the small dimensions and, last but 

not least, the particularly small mounting depth, allow an installation of the units at almost 

any location in the vehicle. All instruments and control panels are designed as built-in units 

and can be inserted from the front. If the preparation of a furniture cutout for the LCD 

displays is not desired, a corresponding casing is available as accessory. 

VOTRONIC Digital Measuring Units – View of Everything, Control of Everything 

The VOTRONIC digital measuring units are an important part of the VOTRONIC modular 

system covering various display possibilities. They are indispensable for measuring and 

control tasks in the camper or intervention vehicle with regard to the technical equipment 

of the vehicle, as well as for detailed information. Any combination of the units is possible, 

thus meeting the individual requirements of the user. 

Precise measurement and excellent legibility of the LCD display, even from a distance, are 

the outstanding features of the LCD modules. Their current consumption is such low, that 

the units may remain continuously switched-on, which ensures the constant availability of 

information at a glance. VOTRONIC digital measuring units give any desired information, 

such as time, inside/outside temperature or the actual battery values. 

Matching to the VOTRONIC modular system, appearance and mechanics (standard height) 

of the built-in units are adapted to the other display modules. The small dimensions of 

the front panel and the particularly small mounting depth of only 18 mm allow an installation 

at almost any location. They are protected against wrong polarization and can be 

connected by means of plug-in type terminal screws. The free ends of the connections are 

executed pluggable, and they are durably labelled. The units will be delivered including 

operating manual and drilling jig for the furniture cutout. 

LED Voltmeter 

LCD Voltmeter 

Exact measurement of the board voltage gives security, since harmful total discharge of 

the board battery is immediately recognized and avoided by immediate charging. Unusual 

strong voltage drops during consumer operation are pointing to an aged storage battery. 

Excessive charging caused by uncontrolled chargers or defective dynamos can be recognized 

and can thus be avoided. Both units are equipped with 2 measuring inputs allowing 

the supervision of 2 batteries, such as board and starter battery. Due to the extended 

measuring range, the LCD Voltmeter also allows mixed operation 12 V / 24 V. 

Unit Type Order No. Display Operating Voltage 

(Battery) V 

Current 

Consumption mA 

Measuring Scale 

V 

Dimensions 

(WxHxD): mm 

Assembly Dimensions 

(WxHxD) mm 

Duo Storage Battery Tester 1011 LED 12 0–50 0.5 47x85x25 35x68x20 28 A 

LCD Voltmeter 1 1213 LCD 12 and 24 2 0.1 80x85x25 65x70x20 59 B 



Plug-in type terminal screw, fastening screws, manual, drilling jig 

Recommended Accessories 1 : Casing, order No. 2015 

Weight 

g 

Execution 

Execution A 

Execution B 

28

Measuring Devices and Displays 

LCD Ammeter 

LCD Ammeter 

The VOTRONIC LCD Ammeter controls the actual battery current rates for charging and consumption of the board storage 

battery. In contrast to conventional indicating instruments, also the important small current rates can be read exactly. Also 

consumers being erroneously still connected or latent consumers (insulation faults, wrong connections, stand-by units etc.) 

are recognized immediately. Charging of the battery is indicated on the LCD display by the sign “+”, as well as by an 

arrow. 




The delivered cable being ready for connection is used to connect the unit to a robust precision measuring resistor (shunt), 

which will be connected to the negative pole of the battery and which measures the instantaneous current rate. 

2 units with shunt executions varying in the capacity are available: 

• for normal consumer/charging current rates up to 60 amperes (continuous) 

(usual execution with several consumers and e. g. one inverter up to approx. 300 watts) 

• for normal to average consumer/charging current rates up to 100 amperes (continuous) 

(usual execution with several consumers and e. g. one inverter up to approx. 600 watts) 

Note: The ammeter is adapted to the measuring shunt being included in the delivery. It cannot be operated 

in connection with other measuring shunts or exchanged by each other! 

Precision Measuring Resistor 

(Shunt) 

Display dimensions (WxHxD): 80x85x25 mm | Shunt dimensions (WxHxD): 150x35x30 mm 

Unit Type 

Order 

No. 

Operating 

Voltage 

(Battery) 

V 

Current Measuring 

Consumption Scale 

mA 

A 

Current 

Measuring 

Range Display 

A 

Current Measuring Weight 

Range 

Shunt A 

Continuous/15/7 min. g 

Ammeter with Shunt 60 A 1214 12 and 24 4 0.1 +/-199.9 60/90/120 215 

Ammeter with Shunt 100 A 1215 12 and 24 4 0.1 +/-199.9 100/150/200 215 

Execution A 



Display unit, measuring shunt, connection cable, 5 m length, ground strap, fastening 

screws, manual, drilling jig 

Recommendable Accessories: Casing, order No. 2015, connection cable, 5 m length, order No. 2005 

Internal / External LCD Thermometer 

and LCD Clock 

Apart from the measurement of the room temperature by the sensor being integrated in the unit, this module also effects 

an external remote measurement by means of the supplied external sensor. It may be installed below the front bumper 

of the vehicle to detect the outside temperature or the temperature of the road (ice alarm device). The external sensor is 

outstandingly suitable for storage of medication or control of refrigerator boxes. 

The legibility of the crystal clock with large LCD display and high accuracy (4 MHz crystal) is very convenient, even from a 

distance. The display shows minutes and hours, as well as a flashing colon for operational check. The flush adjusting knob 

avoids unintentional setting of the clock. Display format: 24 hours. Operation of the clock is possible at the board or starter 

battery with 12 V or 24 V. Due to the very low current consumption the load is very low. 




Execution B 

Dimensions (WxHxD): 80x85x25 mm | Assembly Dimensions (WxHxD): 65x70x20 mm 

Unit Type 

Order 

No. 

Operating 

Voltage 

(Battery) V 

Current 

Consumption 

mA 

Measuring 

Scale 

°C 

Measuring 

Range 

°C 

Weight 

Execution 

g 

Clock 1 1211 12 and 24 2.1 – – 52 A 

Internal/External Thermometer 2 1212 12 and 24 2.1 0.1 -30 bis +90 58 B 

External sensor included in the 

delivery 


Delivery scope 1 : 

Plug-in type terminal screws, fastening screws, manual, drilling jig 

Delivery scope 2 : 

External sensor, plug-in type terminal screws, fastening screws, manual, drilling jig 

Recommendable Accessories: Casing, order No. 2015 

29


Switching and Controlling 

VOTRONIC Battery Control – Fuel Gauge for the Battery 

LCD KapaCONTROL Digital 2 

LCD Battery Computer 

How much residual charge does my board battery have? Is the battery state really “Full”? Why is energy taken from the 

battery, although the consumers have been switched-off? The VOTRONIC LCD battery computer and the VOTRONIC LCD 

KapaControl Digital 2 give the answer to these questions - exactly to an ampere-hour (Ah). At the touch of a button, they 

inform comprehensively of the actual charging state of the battery. They are suitable for all battery types (acid, gel, AGM) 

with 12 V and 24 V battery voltage, and they have a current consumption of only 9 mA. 


Since the units shall record all battery activities, they are permanently in contact with „their“ battery. The microprocessor 

control accurately counts each ampere-hour (Ah) of capacity during charging and discharging. Age of the battery, battery 

size, self-discharge, battery load etc. are considered by means of programmed characteristic diagrams. Even the smallest 

leakage current is detected and recorded by the units. The result is a correct indication of the capacity (Ah) being still available 

in the battery (residual charge), such as it is known from a fuel gauge. This value is indicated on a large LCD display, 

which can be read conveniently even from a distance. 

Even If the discharge is only below 20%, the display will be flashing to warn of an empty battery and to avoid battery 

damage by total discharge. When recharging the battery, the full charging state will be recognized automatically. 

The delivered cable being ready for connection is used to connect the units to a robust precision measuring resistor (shunt), 

which is connected to the negative pole of the battery and which measures the actual voltage and the instantaneous current 

rate. The residual capacity of the battery is then calculated from the measured values and the battery size. The nominal 

capacity of the battery (value at 20 hours discharge) has to be set once at the unit. 




Attention: The units are adapted to the measuring shunts being included in the delivery. They cannot be 

operated in connection with other measuring shunts or exchanged by each other! 


Display Functions: 


a Battery capacity (residual charge in ampere-hours) from 0 Ah (empty) to nominal capacity (full), max. 400 Ah. 

Charging display (+ = charge / - = discharge) 

b Battery capacity (percentage residual charge) from 0 % (empty) to nominal capacity (full), 100 %: 

Charging display (+ = charge / - = discharge) 


a Battery voltage 7 to 32 V (Volts) 

Allows drawing conclusions to the battery behaviour in case of variations in load and serves as operational check for the 

charger, the solar system, the dynamo etc. Flashing warning signal in case of overvoltage. 

b Battery current (+ = charge / - = discharge) +/-0 to max. 1200/1800 A (amperes, depending on the type). Control of the 

discharge current rates (load) by the consumers being indicated by the sign “-“. Also the charging current rates will be 

displayed. They can be identified by an arrow symbol. 

c Battery capacity (residual charge) from 0 Ah (empty) to nominal capacity (full), max. 1500 Ah. 

Display dimensions (WxHxD): 80 x 85 x 25 mm | Dimensions Shunt (WxHxD): 150 x 35 x 30 mm 


(Shunt) 

Unit Type 

Order 

No. 

Display 

Function 

Battery 

Nom. Capac. 

adjustable 

Current 

Measuring 

Range Display 


Range Shunt 

A 

Weight 

g 

Battery 12 V and 24 V Ah A Continuous/15/7 min. 

LCD-KapaCONTROL Dig. 2 with Shunt 60 A 1217 Ah, % 40-400 –/– 60/90/120 218 

LCD Battery Computer with Shunt 100 A 1218 V, A, Ah 50-1500 +300/-450 100/150/200 218 



30 



Display unit, measuring shunt, connection cable, 5 m length, ground strap, 

fastening screws, manual, drilling jig 

Recommendable Accessories: Casing, order No. 2015, connection cable, 5 m length, order No. 2005


LCD Battery Computer PRO 

Based on the proved VOTRONIC LCD Battery Computer, the LCD Battery Computer PRO had been developed. The various 

display functions and the high operating convenience have been extended by an illuminated and clear graphical display, a 

terminal for control, supervision and warning purposes as well as the possibility to display the voltage of a second battery. 

Since the unit is permanently in contact with “its battery”, it records and evaluates any battery action. Any charging and 

discharging currents are counted accurately. Battery size, self-discharge, battery load etc. are considered by programmed 

characteristic diagrams. Even the smallest leakage current is detected and recorded. The result is a correct indication of the 

charging state (of the capacity, which is still available, the residual charge) of the board battery in Ampere-hours (“Ah”) and 

as percentage (“%”) in form of a clear level bar, such as it is known from a fuel gauge. 

The unit is equipped with a freely programmable terminal for automatic switching of consumers depending on the charging 

state of the battery (0-100 %). The on/off switching points can be adjusted freely and independently of each other as 

percentage (%) allowing any switching function. At the press of a button, manual control is possible at any time. Example 

for application: Automatic protection of the battery against harmful total discharge. The consumers are switched-off exactly 

according to charging state, such as below 25 %. EMERGENCY-ON is possible by pressing a key. Consequently, the unit can 

also be used as remote-controlled battery main switch (on/off) or for other switching tasks. 

A connection cable being ready for connection connects the display and the connection unit (shunt C box, near the battery), 

which receives voltage and current. The terminal for connection of signal transmitters or powerful switching relays is located 

here. If the LCD Battery Computer PRO is used as total discharge protection and battery main switch, the application of the 

switching units VOTRONIC Switch Unit 40 or Switch Unit 100 is recommendable because of the efficiency and the extremely 

low current consumption. 

The LCD Battery Computer PRO is suitable for any battery type (acid, gel, AGM) with 12 V and 24 V battery voltage and 

distinguishes by its low current consumption in idle/illuminated state of only 8/65 mA. 

Matching to the VOTRONIC modular system, appearance and mechanics (identical height) of the unit is adapted to the other 

display modules, and the small mounting depth of only 18 mm allows an installation at almost any location. 

Functions: 

a Battery voltage of the board battery “V1” 7 to 32 V (Volts) 

Allows drawing conclusions to the battery behaviour in case of variations in load and serves as operational check for 

the charger, the solar system, the dynamo etc. Flashing warning signal in case of overvoltage. 

b Battery current (+ = charge/- = discharge +/- to max. +/ -2700 A (Amperes, depending on type) control of the discharge 

current rates (load) by the consumers, indicated by the sign “-“. Also the charging current rates will be displayed. 

They can be identified by the “+” sign. 

c Battery capacity “Ah” (residual charge in Ampere-hours) from 0 Ah (empty) to nominal capacity (full), max. 2000 Ah. 

d Battery capacity “%” (percentage residual charge) from 0 % (empty) to nominal capacity (full), 100 %. 

e Battery voltage “V2” of a 2nd battery, such as a starter battery, 7 to 32 V (Volts) 

f Programmable and tactile terminal (PNP, plus potential 12 V / 24 V, max. 1 A) 

LCD Battery Computer PRO 

Shunt C Box with Shunt 


(Shunt) 

Execution A 

Unit Type 

Order 

No. 

Display 

Function 

Battery Current Measuring 

Nom. Capac. Range Display 


Range Shunt A 

Weight 

g 

Battery 12 V and 24 V Ah A Continuous/15/7 min. 

LCD Battery Computer PRO 100 1232 V1, V2, A, Ah,% 50-2000 +/- 650 100/150/200 218 



Display dimensions (WxHxD): 80x85x25 mm | Dimensions shunt C box (WxDxH): 118x71x34 mm | 

Shunt dimensions (WxHxD): 150x35x30 mm 



Display unit with illuminated graphical display, connection unit, including measuring 

shunt, Digital cable, 6 m length, ground strap, fastening screws, manual, drilling jig 

Recommendable Accessories: Casing, order No. 2015, extension digital cable, 6 m length, order No. 2006 

Relay 12 V/70 A, order No. 2200 or 24 V/40 A, order No. 6200, switch unit 40 or 

switch unit 100 

Switching Units Switch Unit 40 and Switch Unit 100 

These robust switching units are equipped with efficient bistable relays allowing very high switching capacities combined 

with a very low own consumption. Particularly suitable in connection with the VOTRONIC LCD Battery Computer PRO as 

total discharge protection and battery main switch with 40 A or 100 A switching capacity. 

Execution B 

Unit Type Order Operating Switching Current Own Consumption Cable Dimensions * Weight Execution 

No. Voltage V Permanent / Short-time A Idle / On Connections (WxDxH) mm g 

Switch Unit 40 2071 12 and 24 40 / 60 0 / < 3 mA 2.5 - 10 mm 2 90x60x38 97 A 

Switch Unit 100 2072 12 and 24 100 / 180 0 / < 3 mA M6 105x70x37 180 B 


Mark of Conformity: CE, E Test acc. to ECE R10 Rev. 2 (EMV/Automotive Regulations) Delivery Scope: Manual 

31


Switching and Protecting 

VOTRONIC Circuit Distributors - Switch Panels and Fuse Panels for the Electricity on Board 

The special features of these units are switching electric appliances and protecting electric 

circuits, combinations according to the individual requirements and clear marking. These 

are the features of those control and switching units. The units are equipped with safety 

cutouts to avoid tiresome searching for the suitable spare fuse. The readiness for use is 

restored at the touch of a button. 

Two different series are available matching to the VOTRONIC modular system and to the 

VOTRONIC info panel, which can be used as individual units or combined. The wide range 

of application allows a combination up to a complete centralized system for campers. 

Neat marking of switches and fuses is facilitated by internationally intelligible marking patterns 

being available. This pictograph film is transparent, self-adhesive and abrasion-proof 

with an imprint matching to the design of the VOTRONIC front panels. The pictographs 

are prepunched to facilitate labelling of the front panel. Dimensions of the pictographs: 

12x10 mm. 

Fuse Panel 4 

• Safety cutouts 6 A, 8 A, 10 A, prewired as group 

• 1 Safety cutout 12 A, can be wired separately 

• Suitable for 12 V and 24 V operation 

• Connection by means of flat connectors 

• Visual control of release 

• Other insertions upon request. 

Switch Panel 4 

• 4 Switches ON/OFF, rating 8 A, each, with LED pilot lamps 

• Connection by means of terminal screws 

• Execution 12 V or 24 V 

Switch Panel 16 A 

• Separate switches 2 x UM with push-on connection. 

• Rating: 2x8 A or 1x16 A 


Socket Panel 12/24 V 

• For 12 V consumers with DIN connector (ISO 4165), rating 8 A 


Main Switch Panel 20 A 

• Robust main switch with 20 A overcurrent cutout (safety cutout) 

• Thermal release, short-time high overload is admissible 

• Release in case of more than 20 A constant current with return movement of the rocker 


Unit Type Order No. Operating Voltage 

V 

Dimensions 

(WxHxD) mm 

Mounting Depth approx. 

mm 

Execution 

Fuse Panel 4 1414 12 and 24 47x85x75 70 A 

Switch Panel 4 1415 12 47x85x25 20 B 

Switch Panel 4 / 24 V 6010 24 47x85x25 20 B 

Switch Panel 16 A 1417 12 and 24 47x85x45 40 C 

Socket Panel 1418 12 and 24 47x85x65 60 D 

Main Switch Panel 20 A 1419 12 and 24 47x85x75 70 E 

Delivery Scope: Flat connector, fastening screws, drilling jig 

Execution A Execution B Execution C Execution D Execution E 

32


VOTRONIC Circuit Distributors – 

Switch Panels and Fuse Panels for the Electricity on Board 

Execution A 

Switch Panel 8 

• 8 Switches ON/OFF with LED pilot lamp 

• Rating each switch: 8 A 



• Self-adhesive pictograph film included in the delivery 

Fuse Panel 8 

• 4 Safety cutouts, prewired as group 2x6 A and 2x8 A 

• 4 Safety cutouts, 2x 10 A, 12 A, 16 A, can be wired separately 





• Other insertions upon request. 

Execution B 

Switch/Fuse Panel 4/4 

• 4 Switches ON/OFF, rating 8 A, each, with LED pilot lamps 


• 4 Safety cutouts, 6 A, 8 A, 10 A and 12 A, being wired as distribution 





Execution C 


V 

Dimensions 

(WxHxD) mm 

Mounting Depth 

approx. mm 

Execution 

Switch Panel 8 1114 12 200x55x25 20 A 

Switch Panel 8 / 24 V 6117 24 200x55x25 20 A 

Fuse Panel 8 1115 12 and 24 200x55x75 70 B 

Switch/Fuse Panel 4/4 1116 12 200x55x75 70 C 

Switch/Fuse Panel 4/4 24 V 6116 24 200x55x75 70 C 

Delivery Scope: Flat connector, fastening screws, drilling jig, self-adhesive pictograph film 

Pictograph Film, Order No. 2111 

transparent, self-adhesive, prepunched, abrasion-proof imprint, dimensions of the pictographs approx. 

12 x 10 mm. 

Explanation of the pictographs: 

1 Fresh Water Tank 16 Lighting 31 Stove/Microwave 46 24 V D. C. Voltage 55 Reserve 64 Fuse 7 A 

2 Sewage Water Tank 17 Lighting Kitchen 32 Electric Step 47 ON 56 Charging 65 Fuse 8 A 

3 Feces Tank 18 Lighting Sanitary Room 33 Electric Sun Blind 48 ON 57 Distribution 1 66 Fuse 8 A 

4 Fuel Tank 19 Lighting Outside Door 34 12 V Socket 49 OFF 58 Distribution 2 67 Fuse 10 A 

5 Tank INSIDE 20 Lighting Storage Space 35 24 V Socket 50 OFF 59 Auxiliary (General) 68 Fuse 10 A 

6 Tank OUTSIDE 21 Refrigerator 36 General Alarm 51 ON 60 Main (General) 69 Fuse 12 A 

7 Tank 1 22 Heater 37 Carbon Monoxide Alarm 52 OFF 61 Fuse 4 A 70 Fuse 16 A 

8 Tank 2 23 Boiler 38 Gas Alarm 53 Phone 62 Fuse 5 A 

9 Tank General 24 Pump 39 Ice Ex 54 Fax 63 Fuse 6 A 

10 Tank Heater 25 Fan 40 Headlight 

11 BOARD Battery 26 Blower 41 Power Supply 

12 STARTER Battery 27 Radio 42 Voltage Transformer 

13 SOLAR Battery 28 TV 43 Caution Mains Voltage 

14 Battery 1 29 Video Recorder 44 Mains 230 V 

15 Battery 2 30 Satellite Receiver 45 12 V D. C. Voltage 

33

VOTRONIC Peripheral Units 

Indispensable Aids in the Background 

Safety for the Battery 

VOTRONIC automatic chargers ensure correct battery charging due to advanced charging 

technology. They are suitable for any conventional lead battery (refer to chapter charging 

technology). The VOTRONIC peripheral units are the right choice for appropriate treatment 

of batteries in daily use. They work in the background and ensure automated charging 

control and battery control. 

For campers, boats, intervention vehicles etc. the batteries must supply energy even during 

standstill of the vehicles. Therefore, these vehicles are usually equipped with several batteries, 

which are used separately for driving and standstill. 

Distinction is made between starter and supply battery (batteries). As already recognizable 

by the name, the starter battery is responsible for a reliable start of the vehicle, while the 

other battery (batteries) takes (take) over the supply of the electric appliances in the vehicle. 

To ensure reliable operation of each battery circuit and the vehicles’ electric supply, different 

units are required for charging control during driving. 

The VOTRONIC TRS Relay takes over simultaneous charging of all batteries and separation 

at the right moment to ensure that the vehicle can be started at any time. With 

the VOTRONIC StandBy charger in connection with chargers, solar charging controllers, 

generators etc., which are not equipped with a second charging port, the starter battery 

can be recharged. 

Very often, failure of the supply batteries is caused by low voltage or total discharge. Total 

discharge of a 12 V lead storage battery and consequently damage starts already from a 

battery voltage of less than 10.5 V. Very often, this is caused by consumers, which have 

not been switched-off, “hidden” discharge in the mA range by tracking currents in case of 

humidity despite of disconnected main switch, electromagnetic stop valves of heaters or 

“silent” consumers, such as clocks, control panels and units in stand-by mode. This harmful 

total discharge must be avoided. In fact, this should be effected fully automatically. 

The VOTRONIC units Battery Protector 40 and 100 control and protect the board battery 

from dangerous total discharge and the consumers from low voltage and overvoltage. The 

units effect automatic separation of the electric consumers from the battery prior to total 

discharge. Total discharge is avoided by application of the VOTRONIC Battery Computer 

(refer to chapter Battery Control), which is working like a fuel gauge of the battery and 

which displays the residual capacity of the battery. 

StandBy Charger 

The VOTRONIC StandBy Charger serves for automatic recharging and conservation of 

charge of the starter battery or the auxiliary battery, if the mains supply charger, the solar 

charging controller or the generator is equipped with only one charging port. Retrofit of 

the unit is very easy by just interconnecting it between board battery and starter battery or 

board battery and auxiliary battery, without having to change the cabling. 

If the mains supply charger operates and charges the board battery, a small part of the charging 

current - depending on the charging condition - will be charged to the second battery 

(starter battery or auxiliary battery). Conservation of the charge is effected automatically 

and can be recognized by an increased voltage of the second battery. Overcharging of the 

second battery is excluded, since the charging voltage is reduced by at least 0.6 V and the 

charging current is limited to 2 A. 

VOTRONIC Intelligent Cut-off Relay – Plenty of Energy for Starter Battery and Board Battery 

TRS Relay 

The VOTRONIC TRS Relay will be connected between starter battery and supply battery. 

It combines the charging possibilities, like dynamo and mains supply charger to enhance 

the utilization of existing vehicle batteries. During driving the starter battery and the board 

battery are charged by the dynamo. If required, the integrated cut-off relay also supplies 

plenty of charging current to the board battery. 

During missions - the relay is switched-off in case of motor standstill - the consumers will be 

supplied by the board battery, whereas the starter battery will not be touched, thus keeping 

the full starting capacity. 

During standstill mode with mains supply charger, solar system or petrol-driven generator, 

the board battery will be charged at first. As soon as the latter has been charged sufficiently, 

simultaneous charging of the starter battery will be effected to keep it always ready for operation, 

also in case of extended stop periods (conservation of charge). This function will be 

indicated by means of a green light-emitting diode. The intelligent switching to conservation 

of charge ensures adequate recharging of the starter battery (0.1-3.5 A) depending on the 

corresponding charging state to be able to supply the major part of the charging current to 

the supply battery being in need of it. Overcharging of the starter battery is excluded. 


(Batteries) V 

Current Consumption 

mA 

Switching Current Charging Current during Standstill 

Cut-off Relay Driving Mode, A Mode for Starter Battery, A 

Dimensions * 

(WxDxH) mm 

Weight 

g 

Execution 

TRS Relay 12V/70A 1 3081 12 2 70 0-3.5 90x60x38 115 A 

TRS Relay 24V/40A 1 6081 24 2 40 0-2.5 90x60x38 115 A 

StandBy Charger 12 V 2 3065 12 – – 0-2 90x60x38 52 B 

StandBy Charger 24 V 2 6065 24 – – 0-2 90x60x38 52 B 



Delivery scope 1 : Flat connector 6.3 mm and 9.5 mm, manual Delivery Scope 2 : Manual 

Execution A 

Execution B 

34

Peripheral Units 

Battery Conservation 

Nowadays, the lifetime of the batteries in lead technology is extremely extended due to 

proper charging technology and avoidance of total discharge. Even temporary load of the 

battery with appreciable current rates, as well as periodical recharging after extended standstill 

periods (seasonal operation) are simulating a driving mode and counteract to a “weak” 

battery. The following two units shall extend the battery lifetime by training as well as by 

avoidance and decomposition of sulphate and acid accumulation and shall reactivate batteries 

seeming to be defective. 

Both units will be directly connected to the battery with original connection cables and cable 

lugs M8. The function of sensitive consumers or charging devices will not be affected. Both 

units will be connected directly to the battery or the battery system using cable lugs M8, and 

they are suitable for any type and brand of lead battery 12 V (acid, starter, gel, AGM). 

Battery ProFIT 

The VOTRONIC Battery ProFIT is activated at battery charging (battery refresher) and automatically 

ensures the life-preserving fitness of the battery during driving. For regeneration, 

additional, very short and powerful charging current pulses (approx. 8000 per second) are 

supplied to the battery to remedy already existing damages and to decompose and destroy 

sulphate accumulations in the battery. Formation of new sulphate crystals is prevented. 

Even weak batteries seeming to be defective will be reactivated. In ideal case and if the 

battery is not too much pre-damaged, the former values of capacity and charging capacity 

will be achieved. 

These pulses can also support formatting of new batteries. For optimum results, current and 

voltage curve of the pulses are adapted to the charging voltage curve of the battery. 

The VOTRONIC Battery ProFIT is suitable for any type and brand of 12 V lead battery (acid, 

starter, gel, AGM). 

Battery Trainer 

The VOTRONIC Battery Trainer is active during the remaining time, when the battery is not 

charged. Sulphate accumulation and other degenerating effects at the lead plates of the 

battery are reduced, and the battery is kept in good condition, if it is not used for an extended 

period or if it is permanently discharged with only inferior current rates (self-discharge, 

latent consumers etc.). The battery is protected from premature ageing and failure. The unit 

is a kind of fitness trainer due to the very powerful and very short double current pulses, 

which are adapted to the charging state of the battery. However, the energy being taken 

from the battery in the scale of the self-discharge is proportionally low due to the short pulses 

and long intermediate intervals. If high-capacity consumers are connected, the battery 

trainer will change automatically to pause mode. 

The integrated diagnostic function of the intelligent unit stores extraordinary operating 

states of the battery, such as total discharge or overvoltage. The memory can be read or 

deleted at any time. 

Two light-emitting diodes serve as operational check: 

• Pulse current control 

• Warning that recharging of the battery is required 

The VOTRONIC Battery Trainer is suitable for any type and brand of 12 V lead battery (acid, 

starter, gel, AGM). 

Unit Type Order No. Battery 

Voltage 

Battery 

Capacity 

Activation Voltage 

Pulse Current 

Short-time 

Pulse 

Repetition 

Own 

Consumption 

Dimensions * 

(WxDxH) 

Weight 

Execution 

Battery ProFIT 3062 12 V 20-200 Ah > 13.3 V (Charging) 20 A 8000/s 0.1 A 76x40x25 mm 80 g A 

Battery Trainer 3064 12 V 20-200 Ah < 13.2 V (Discharging) 100 A 20 s 0.012 A 76x40x25 mm 70 g B 

Delivery Scope: Manual 


Execution A 

IP 67 

robust 

water-tight 


Execution B 

IP 67 

robust 

water-tight 


35



Charging Current Distributor CCD 150 e 

robust 

low-loss 


water-tight 

The VOTRONIC Charging Current Distributor CCD 150e is a fully electronic charging current distributor with special functions. 

It charges two separate batteries or battery banks from one charging source, such as generator, dynamo, powerful 

chargers, efficient solar systems etc. If there is no charging voltage at the input of the charging current distributor, the 

batteries will be completely separated from each other by the unit. 

Owing to least voltage losses and perfect battery separation, the CCD 150 e is the ideal alternative to conventional diode 

distributors or cutoff relays. The charging current is distributed to the battery with the greatest demand. Even batteries, the 

discharge of which is strongly varying and strongly varying battery sizes (capacities) are charged reliably and simultaneously 

from one charging source. Mutual discharge of the batteries is excluded, which always ensures the starting safety. 

• High maximum admissible current of 150 Amperes owing to robust power electronics 

• Operation either with board voltage mains 12 V or 24 V (not mixed) 

• Advanced FET power technology with least voltage losses avoids interventions at the dynamo or its controllers 

• Since the dynamo activation can be programmed, it is suitable for any conventional, also advanced self-excited dynamo 

types (without D+ connection), by an automatic dynamo activation mode 

• Optimum charging of identical battery types (acid, gel, AGM) or in combination with starter battery 

• Voltage reduction, automatic charging program for the starter battery for quick full charging and careful conservation of 

charge 

• Complete separation of the batteries avoiding mutual battery discharge 

• Integrated battery bridge function for emergency motor start, can be remote-controlled by means of a push-button. 

• Robust, completely sealed execution for application in rough ambiance conditions, housing and cooling ribs potential-free. 

Unit Type 

Order 

No. 

Battery 

Voltage Rates 

Battery 

Capacities 

Max. Admissible Current 

In / Out1 / Out2 

Own Consumption 

Idle/Charging 

Dimensions * Weight 

(WxDxH) mm g 

Charging Current 

3083 12V or 24V 20-1000 Ah 

Distributor CCD 150 e 

150A / 150A / 150A


Plus Distributor 6 

Professional fuse protection of separate electric circuits at the plus side of the battery avoiding fire on cables and vehicles. 

The plus feed line serving for plus distribution is to be connected to the two-pole terminal screw (2 x 6 mm²) . Thus, 6 fuseprotected 

positive electric circuit connections with a large clamping range (4 mm², max. 16 A) are obtained. The electric 

circuits are marked with 1-6. 

The delivery includes 12 V / 24 V flat plug fuse 4x 8 A, 1 x 10 A and 1 x 15 A. Suitable for 12 V and 24 V operation. 

Execution A 

Minus Distributor 12 

Professional junction of 12 separate electric circuits at the minus side of the battery. Particularly recommendable for ground 

distribution in case of insulating (plastic) vehicle bodies. The minus feed line serving for minus distribution is to be connected 

to the two-pole terminal screw (2 x 6 mm²). Thus, 12 negative electric circuit connections with a large clamping range 

(4 mm², max. 16 A) are obtained. The electric circuits are marked with 1-12. Suitable for 12 V and 24 V operation. 

Execution B 

Plus Distributor 8 

Efficient plus distributor with 6 fuse-protected outputs of different capacity values. The plus feed line of the battery is connected 

to a solid terminal block with cable lug (16 mm²). The distribution is the following: 

Connection 1: Terminal block with cable lug (16 mm²) and strip fuse 40 A, 50 A or 60 A, with light-emitting diode indicator, 

as main protection, or for larger consumers, such as inverters up to 12 V/600 W or 24 V/1200 W, powerful chargers etc. 

Connection 2: Terminal 6 mm² with flat plug fuse 30 A, such as for average consumers or charger. This branch can either 

be supplied by the main circuit by means of an internal bridge, or separately from the other circuits over a second terminal 

6 mm². 

Connections 3 - 6: Terminals with large clamping range (4 mm² max. 16 A) and flat plug fuses 2 x 15 A and 2 x 10 A. 

The cover with cable guiding unit ensures safe fixing of the cables and neat appearance. The light-emitting diode for supervision 

of the strip fuse connection 1is also visible with the cover is installed. The plug-in type fuses are identified by labels. 

Suitable for 12 V and 24 V operation. 

Execution C 

Minus Distributor 14 

Efficient distributor at the minus side of the battery for 12 individual electric circuits. Particularly recommendable for ground 

distribution in case of insulating (plastic) vehicle bodies. The minus feed line is connected to a solid terminal block with 

cable lug (16 mm²). If required, a further terminal block serves for minus distribution (cable lug 16 mm²). The distribution 

is effected on 4 terminals (6 mm², max. 32 A), as well as 8 terminals (4 mm², max. 16 A). The electric circuits are marked 

with 1-12. The cover with cable guiding unit ensures safe fixing of the cables and neat appearance. Suitable for 12 V and 

24 V operation. 

Execution D 

Fig. Without Cover 

Unit Type Order No. Operating Voltage Dimensions (WxDxH) mm Execution 

Plus Distributor 6 3209 12 and 24 47x75x35 A 

Minus Distributor 12 3212 12 and 24 47x75x35 B 

Plus Distributor 8 1 3215 12 and 24 105x71x36 C 

Minus Distributor 14 2 3218 12 and 24 105x71x36 D 


Delivery Scope 1 : 2 Pcs. cable lugs, 16 mm², stripe fuse 40 A, 50 A, 60 A, 

flat plug fuses 1 x 30 A, 2 x 15 A and 2 x 10 A, manual 

Delivery Scope 2 : 2 Pcs. cable lugs, 16 mm², manual 

* Dimensions incl. mounting flanges 

Fig. Without Cover 

37



Battery Controller – Undervoltage Protection for Board Battery and Starter Battery 

Battery Protector 40 

Battery Protector 40 Motor according to DIN 1789 

Battery Protector 100 according to DIN 1789 

The VOTRONIC units Battery Protector 40 and Battery Protector 100 are connected between supply battery and consumers, and they are suitable for all 

types and brands of lead batteries (acid, gel, AGM). The units protect the battery from dangerous total discharge and the consumers and equipment from 

undervoltage and overvoltage. Apart from that, they can be used as remote-controlled battery main switch by means of an external switch. 

Battery Protector 40: 

• Switching current 40 A, short-time overload up to 60 A is admissible, display of the switching state being visible from outside 

• EMERGENCY ON function by switch at the unit; remote control is possible by external switch 

• Automatic reset as soon as the battery voltage is in the normal range (charging) 

• Separate sensor cable and switching thresholds with hysteresis and timer function for trouble-free operation 

• Bi-stable power relay, very low own consumption: only 3-3 mA (according to EN 13976) 

• No own consumption after disconnection by external switch, such as remote control as battery main switch 

• Solid terminal screws for battery and load cable cross sections up to 10 mm² 

Battery Protector 40 Motor: 

• Execution “Motor” with higher disconnection thresholds keeps the starting capacity of intervention vehicles with only one battery circuit according to 

DIN EN 1789. 

Battery Protector 100 additional standard equipment: 

• High switching current 100 A, short-time overload up to 180 A is admissible, can be switched over to 12 V/24 V board mains supply. 

• Intelligent switching threshold automatism always calculates the disconnection point “empty” being appropriate for optimum use and safe protection 

of the battery, from powerful consumers (low switching threshold at shorter response time) to very small loads (e. g. “hidden” current consumers with 

response times over days/months with high response threshold). 

• Operation with 3 defined disconnection thresholds can be (manually) adjusted. 

• The higher set values are keeping the starting capacity of intervention vehicles with only one battery circuit (according to DIN EN 1789) 

• The preliminary alarm with visual (LED) and audible indication (beep, can be switched-off), as well as a separate warning terminal (PNP, plus potential, 

0.2 A) allow to the user to take countermeasures in time (such as to disconnect consumers, which are not required). 

• Solid threaded battery connections for cable lugs M6, protection caps included in the standard delivery 

Unit Type Order No. Operating 

Voltage 

V 

Switching Current 

Permanent/ 

Short-time A 

Switching Threshold 

Undervoltage 

V 

Reset Point 

Undervoltage 

V 

Overvoltage 

OFF/ON 

V 

Temp. 

Range 

°C 

Dimensions * 

(WxDxH) 

mm 

Weight 

g 

Execution 

Battery Protector 40 1 3075 12 40/60 10.7 12.5 15.5/15.0 -20/+50 90x60x38 97 A 

Battery Protector 40 Motor 1 3073 12 40/60 11.8 12.8 15.5/15.0 -20/+50 90x60x38 97 A 

Battery Protector 40 / 24 1 6075 24 40/60 21.4 25.0 31.0/30.0 -20/+50 90x60x38 97 A 

Battery Protector 40 / 24 Motor 1 6073 24 40/60 23.6 25.6 31.0/30.0 -20/+50 90x60x38 97 A 

Battery Protector 100 2 3078 12 and 24 100/180 10.6/11.5/11.8** 12.4/12.5/12.8** 15.5/15.0** -20/+50 105x70x37 180 B 

9.5-12.2*** ** 12.5*** ** 

** In case of 24 V operation values x 2 *** Switching threshold automatism * Dimensions incl. mounting flanges, without connections 

Mark of conformity: CE, E Test acc. to ECE R10 Rev. 2 (EMV/Automotive Regulations) 

Delivery scope 1 : Manual Delivery scope 2 : Manual, 2 protection caps 

Execution A 

Execution B 

Remote Control is possible with a simple 

ON / OFF switch 

as battery main switch 

38


Battery Controller – Undervoltage Protection for Starter Battery 

Start Alarm 124 

according to DIN EN 1789 for intervention vehicles 

The VOTRONIC Start Alarm 124 is an alerter with audible alarm (beeper) and visual alarm 

(LED) for the starter battery of intervention vehicles with only one battery circuit (according 

to DIN EN 1789, paragraph 4.3.2). The alarm shall warn the driver early of a battery, which 

is not capable to start. 

An additional horn or similar alarm device can be connected to a terminal (plus potential, 

PNP-port, max. 0.5 A). The reset to normal operation is effected automatically, as soon as 

the motor is started. 

The unit is suitable for 12 V and 24 V operation and for all types and brands of lead batteries. 

The electronic system is protected against humidity; the connection is made in the 

rear terminal box. 

The own consumption is below 3 mA (according to EN 13976). 

The intelligent electronic evaluation of the Start Alarm 124 avoids indication errors, such 

as in case of voltage drops. 

Unit Type Order No. Operating 

Voltage 

V 

Switching 

Current 

A 

Switching Threshold 

Undervoltage 

V 

Reset Point 

Undervoltage 

V 

Temp. 

Range 

°C 

Dimensions * 

(WxDxH) 

mm 

Weight 

g 

Start Alarm 124 0161 12 and 24 0.5 11.5** 12.5** -20/+50 70x36x17 30 

** In case of 24 V operation values x 2 * Dimensions incl. mounting flanges, without connections 

Mark of conformity: CE, E Test acc. to ECE R10 Rev. 2 (EMV/Automotive Regulations) 


DIN EN 1789 

humidity-proof 

39

VOTRONIC Accessories 

1 

Order No. Fig. 

Individual sensor (for e. g. tank transmitter set) 2000 1 

Tank sensor, consisting of rubber dowel, screw V2A with washer and cable lug 

2 

Temperature sensor 2001 2 

Temperature sensor with connection cable of 2 m length, sealed for protection 

against environmental pollution, for all VOTRONIC units. Bore hole for bolt M8 

3 4 

Control cable with large connector (old connector system until approx. August 2002) 2004 3 

Control cable with small connector (new connector system as from Aug. 2002) 2005 4 

Extension cable of 5 m length for VOTRONIC Battery Computer, 

KapaCONTROL, Ammeter, Solar Display, Solar Monitor, 

Remote Control for Automatic Charger and MobilPower Inverter 

Extension digital cable (not shown) 2006 

Extension cable of 6 m length for VOTRONIC Battery Computer Pro, 

LCD Tank Monitor Digital 4 

5 

Connection adapter for Solar Controller/Solar Display 2060 5 

Connection adapter for all VOTRONIC solar controllers/solar displays for adaptation of the new 

connector system to the former connector system, including control cable of 5 m length, order No. 2005 

6 

Blind for front panel, horizontal 2017 6 

Blind for front panel, vertical 2018 7 

Serves as blind cover for planned panels or for installation of own components. 

Horizontal: Dimensions: 55x200 mm, cutout max. 47x182 mm 

Vertical: Dimensions: 85x47 mm, cutout max. 70x35 mm 

7 

10 

8 

9 

Casing for LCD Displays 

Suitable for LCD Clock, Thermometer, Voltmeter, Ammeter, 2015 8 

KapaCONTROL Dig. 2, Battery Computer, Solar Monitor and Solar Display 

Aluminium casing, matt black lacquer, dimensions 87x83x27 mm 

Cutoff Relay 12 V / 70 A (Dimensions*: 26x26x42 mm) 2200 9 

Cutoff Relay 24 V / 40 A (Dimensions*: 26x26x42 mm) 6200 9 

Cutoff relay, disconnects the starter battery from the board battery, as soon as the motor is stopped 

and reconnects both batteries in parallel when the motor is restarted for charging by the dynamo. 

Delivery including all required female connectors and manual 

* Dimensions incl. mounting flange, without connections 

High-capacity Cutoff Relay 12 V / 180 A (Dimensions*: 45x45x63 mm) 2201 10 

Execution as above, but more powerful and equipped with spark extinction diode. Connections: 

Power Supply Connections: Threaded bolts M6; Control connections: Flat connector 6.3 mm. 

Delivery including all required female connectors and manual 

* Dimensions incl. mounting flange, without connections 

12 

11 

DIN Connector 12 V / 24 V 2210 11 

2-pole standard connector according to DIN ISO 4165 for 12 V or 24 V, max. 8 A, 

with insulated ground strap, suitable for 2-pole standard sockets 

Switch with integrated safety cutout 20 A 2241 12 

Overcurrent cut-out for 12 V and 24 V D.C. voltage. Reliable release, even in case 

of stuck rocker switch. Reconnection can be effected after a cool-down break. 

It can also be used as switch or main switch 

Dimensions: 48x25 mm, cutout: 44x21 mm, mounting depth approx. 60 mm 

40

Accessories 


Safety Cutout 6, 8, 10, 12 or 16 A Order No., see price-list 13 

Safety cutout for 12 V and 24 V direct voltage. Releases reliably, even in case of stuck push-button. 

Dimensions: 25x14 mm, Cutout: 20x13 mm, mounting depth approx. 60 mm 

13 

Cable fuse holder with flat plug fuse 3 A 2220 14 

for protection of 12 V and 24 V small consumers, such as 

LED and LCD display modules 

14 

Fuse holder for strip fuses 2242 15 

Fuse holder for strip fuse for protection of larger consumers. 

Both sides of the fuse holder are equipped with a thread M5. 

Delivery excluding fuse 

15 

Strip Fuse, packaging quantity 3 pieces Order No., see price-list 16 

Strip fuse for insertion into fuse holder, fig. 15, as well as for Plus Distributor 8 

for protection of 12 V and 24 V installations: 

30 A, 40 A, 50 A, 60 A, 80 A 

16 

Power Fuse Holder 2250 17 

Fuse holder for power fuse for protection of large consumers or power circuits. 

Both sides of the fuse holder are equipped with a thread M8. 

Delivery excluding power fuse 

17 

Power Fuse Order No., see price-list 18 

Power fuse for insertion into power fuse holder for protection of 12 V and 24 V 

installations: 100 A, 125 A, 150 A, 175 A, 200 A, 225 A, 250 A 

18 

High-current cable 25 mm², length: 40 cm 2262 19 

High-current cable 35 mm², length: 40 cm 2263 

High-current cable, orange, highly flexible, both sides are equipped with cable lugs 

for bolts M8, for connection of power fuse holder and battery. 

Other lengths can be manufactured on request. 

19 

Control Unit 2065 20 

On/off control unit for VOTRONIC Sine Inverter SMI (-NVS) of all capacity classes. 

The control is effected with a +12 V signal (ON), e. g. of D+ (inverter works 

automatically during motor operation for light pole, air-conditioner, refrigerating and 

heat boxes, large consumers etc.) or centrally from a general main switch 

(all units including the power packs are switched-on/off when entering or leaving the vehicle). 

Delivery Scope: Control unit, connection cable, 30 cm length, operating manual 

20 

Additional remote control for Sine Inverter 2067 21 

Extension set with 2 nd remote control for VOTRONIC Sine Inverter SMI (-NVS) 

of all capacity classes. In addition to the remote control, which is included in the 

standard delivery of the inverter, it allows complete control and further operation 

of the inverter from a second location (right / left, driver’s cabin / body). 

Delivery Scope: Remote control, Y distributor, connection cable 5 m, connection cable 30 cm length 

21 

Remote Distributor for Chargers 2074 22 

Y distributor for VOTRONIC Automatic Chargers Pb, VAC for operation with 

2 remote controls, 1remote control and 1 remote indicator or 

2 remote indicators. 

Allows control of the charger from a second location. 

Delivery Scope: Y distributor, connection cable 30 cm 

22 

41

VOTRONIC Accessories 


17 

19 

18 

Automatic cable rewinder, execution 4 m (for max. 5 A charging current) 2312 17 

Automatic cable rewinder, execution 8 m (for max. 8 A charging current) 2314 

Execution 4 m with cable 4 m, for continuous charging capacity of max. 5 A, 

only suitable for Automatic Charger VAC 12/24-05 Station, robust heavy-duty execution 

for wall and ceiling installation, with cable stopper for adjustment of the optimum 

grip height, without charging connector 

Execution 8 m with cable 8 m, for continuous charging capacity of max. 8 A, 

also suitable for Automatic Charger VAC 12/24-08 Station, other data as mentioned above 

Helix cable, 2-core, execution 5 m (identical design) 2318 18 

Helix cable, length approx. 1.2 m, extractible to approx. 5 m, suitable as charging 

cable for connection to Automatic Charger VAC 12 V/24 V. 

Oilproof and acidproof cable for high mechanic stress, suitable for humid rooms, 

rating up to 15 A, without charging connector 

Connecting box 2310 19 

Connecting box with screwed cable glands PG 11 for solid connection of 

cable rewinder or helix cable at the VOTRONIC Autom. Charger VAC 12/24 Station. 

Order No. 0593 and 0597. Waterproof heavy-duty quality. 

Delivery incl. fastening material. Dimensions without connections (WxDxH): 120x80x57 mm 

20 

Charging connector for fire fighting vehicles according to DIN 14690 (C-connector) 2323 20 

2-pole cable connectors with antikink device according to DIN 14690, suitable for 

automatic cable rewinder or helix cable 

Charging socket for fire fighting vehicles according to DIN 14690 (C-connector) 2325 21 

2-pole socket according to DIN 14690 with protection cap and seal for vehicle installation 

21 

MagCode Power System Set 12 V 2326 22 

MagCode Power System Set 24 V 2327 

Magnetic connecting system with connector and socket, with automatic latching 

and automatic release In case of strong tension. Socket: Installation Ø 28 mm, 

with coupling ring, connection 6.3 mm flat connector; connector: 

Lead-in cable Ø max. 7 mm, connection terminal screws. Rating max. 15 A 

22 

MagCode Power System Set Pro 12 V 2328 23 

MagCode Power System Set Pro 24 V 2329 

Execution as above, but with magnetic and mechanic latching (bayonet). 

Rating max. 25 A 

Further technical data can be drawn from the website of the manufacturer: www.magcode.com 

23 

42

Accessories 

Vehicle Power Supply with Automatic Separation Function at Start 

Rettbox ® 

Power supply unit for rescue vehicles. 

Suitable for supply of 12, 24, 230 or 400 V. The unit is equipped with an automatic ejection mechanism, which is activated 

by the ignition switch. The unit will be delivered ready for installation in a casing with protective insulation of glass-fibre 

reinforced polyamide with self-closing slide cover. The delivery includes a mounting frame with cellular rubber seal and 

fastening material. 

Rettbox ® -air 

Power and air supply unit for fire fighting vehicles. 

Execution as above, however with integrated compressed air supply up to max. 13 bars. 

Rettbox ® Coupler Socket 

Coupler socket ready-made with current cable suitable for Rettbox 

Rettbox ® -air Coupler Socket 

Coupler socket ready-made with current cable and integrated compressed air pipe suitable for Rettbox-air. 

Rettbox is a registered trademark of the company ISV Industrie Steck-Vorrichtungen GmbH. 

For further information as well as order numbers of the required executions and variants, please refer to the website of the 

manufacturer: www.rettbox.de 

Please note: 

If you want to return a unit to our company, it should 

be packed properly and delivered freight prepaid. A unit, 

which is supposed to be defective, does not justify, yet, 

to be released from freight costs. The technical condition 

of the unit cannot be assessed before inspection in our 

house. In any case, we will bear the costs for return of the 

unit to your address. 

43

Electronic-Systeme GmbH & Co. KG 

Ilbeshäuser Straße 4 

D-36355 Grebenhain 

Phone: 00 49 (0) 66 44/96 11-0 

Fax: 00 49 (0) 66 44/96 11-20 

e-mail: info@votronic.de (General Requests) 

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technik@votronic.de (Technical Support) 

Internet: www.votronic.de 

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VOTRONIC Automatic Charger - Solarlink GmbH, preiswert und ...

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