External temperature sensor for Webasta heaters - 66052A View larger

External temperature sensor for Webasta heaters - 66052A

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For remote control of air temperature, set Ident / No. 66052 is used.

Thermal sensor is compatible with combi-timers ID # 88204, 88195, 88206, 88205.

Indication of temperature is reflected on the display. To display the temperature, press the button twice.

Note! The electrical circuit shows only the connection of an external temperature sensor.

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Data sheet

ManufacturerWebasto (Germany)

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Thermal sensor location:

• Do not place near a heat source or hot air stream.

• Thermal sensor is usually located at an average height in the cab of a car on a vertical surface.

• The installation site must be protected from direct sunlight.

• Do not install in places where air movement near the sensor is possible (for example, near a curtain).


To connect the sensor, use two wire harness (conductor cross section 0.75 mm 2) of the required length. When making a harness, use the supplied contacts and rubber seals (on the sensor side) and contacts to connect to the terminal on the combi-timer. Connection polarity does not matter. For contact crimping, use the appropriate tool. Connections of the harness to the 12-pin connector of the combination timer use pins 3 and 5.

Functionality check:

• The first press of a button with a symbol leads to the display of the current time.

• A second press on the display of the air temperature display near the temperature sensor.

Contents of delivery:

1. thermal sensor

2. block with lock

3. mounting screws

4. sealing rubber bushings

5. terminals for combi timer and harness

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Air Top 2000/S/ST/STC