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Bader GmbH

Siemensstrasse 21
D- 71691 Freiberg
Tel: 07141/ 68877-0
Fax: 07141/ 68877-22

Our company

head office

Freiberg/ Neckar
Gottfried Bader

We are certificated according to ISO 9001 since 1996.

Unser Firmensitz Freiberg / Neckar // Unsere Produktpalette: Klimatisierungs-Systeme, Bedienger├Ąte, Steuerger├Ąte, Thermostate, Kfz-Relais, Wechselrichter

Our products

Detailled informations you can find following the link "products"

CAN- Bus-Systems

The CAN-Bus is a typ of network, which is used mainly in the automotive engineering
It combines different control units, called nodes, to exchange informations.
The nodes are installed close to the sensors and actors.
The BADER air condicioning systems are
built according to this principle.

control panels

Depending on type and construction the
units are used to serve the climate controller
 (see control devices)
or for autonomous climate control in vehicles
 e.g. driver cabines or minibusses.

control devices

The devices can be used in different modes.
- "stand alone", all values are preseted, no
   handling required
- in combination with a control panel,
  the communications works by RS232
- or with external switches and potentiometers,
   e.g. a control console.


The BADER thermostats are used for
carrying out simple control functions,
e.g. the climatisation of refrigerated trucks or containers.
There are different control functions:
two-level controller, three-level controller, four-level controller.

Automobile- Relays

The BADER relays are devided in the following
1. time relays with different time responses,  like
    impuls extension, switch- off delay, 
    switch- on delay
2. voltage control relays, for monitoring
    the on board voltage  for switched loads
3. Starter safeguard lock relays, for locking
    the start operation of running machines.

Voltage converter

The voltage converter are used for vonverting
the 24 V on board voltage to 230 VAC voltage
They vary in different power types
The outputs are protected against overload and shortcut.


The BADER temperature sensors have different
constructions depending of the application
- indoor temeperature, roof channel
  convector temperature, blow out temperature.
- outdoor temperature, motor temperature,
  evaporator temperatur.

Our services

Development, production, und sale
of electronic systems for automotive engineering
and industry automation.

Customer specified systems

In close coorperation with the customer we
determine the system requierements and prepare the technical specifications.

After testing the prototype in the target system the release of product takes place.
After this the series production can start.

Customer development

Make use of our experience in hardware- and software- development.

We assist you in creating the specifications, develope your product and build the prototype.
On request we also can handle the series production.


Dispose, assemble, soldering, test, mounting.

All activities, beginning with receipt of order, followed by production control, ending with outgoing goods are handeld with a efficient PPS- systems.

Our customers are reputable manufactors of
commercial vehicles and suppliers.