Rain/light/climate sensor
Rain light climate sensor
Rain/light sensor


  • Market leader since 1999
  • Flexible integration and compact design thanks to modular system
  • Global production sites

With over ten years’ experience in the development, manufacture and distribution of multifunctional sensors, HELLA is an established supplier of sensors to the automotive industry.

HELLA has broken boundaries in the automotive market by offering the first five-function combination sensor.


  • Rain/light sensor

HELLA’s rain/light/climate sensor features combined sensor control functions such as automatic windshield wipers, optimized lighting and air conditioning based on evaluation of solar loads and humidity in the vehicle, and also comes with a function to improve the visibility of the head-up display (HUD).

The rain/light/climate sensor module is one of the smallest sensors of its type on the market and features a flexible, modular design.

It combines five functions: rain, light, solar load, humidity and visibility of the head-up display.

These multiple functions can be combined as a package according to customer requirements.

The sensor’s modular design allows for up to 20 custom variants, such as:

  • Light sensor
  • Rain sensor
  • Rain/light sensor
  • Rain/light/sun load sensor
  • Rain/light/climate sensor (solar load and humidity)
  • Climate sensor (solar load and humidity)
  • Optional: Head-up display (HUD) with brightness control

The customer selects the variant that best matches his needs based on the individual requirements of each vehicle series.

The integration of a rain/light sensor considerably helps to improve visibility and comfort in a range of driving situations (e.g. in the rain, in tunnels and at night) and when exposed to diverse environmental influences (e.g. rain, sun, humidity).

  • Rain_Light_Sensor_without_humidity_HELLA_2014
  • Integration of up to five functions in one sensor, in any combination
  • Custom software solution
  • Simple and safe attachment process without the need for additional mounting tools or parts
  • HELLA expertise in climate technology
  • Lighting function compliant with ISO 26262 ASIL B
  • Rain and head-up display function compliant with ISO 26262 ASIL A
Rain/light/climate sensor
 Length x width  68.5 mm x 34 mm
 Height  10.6 mm
 Weight  17 g
 Rated voltage  13.5 V
 Overvoltage  24 V
 Operating voltage  9 V - 16 V
 Power consumption  < 50 mA
 Operating temperature  -40°C to +85°C
 Storage temperature  -40°C to +100°C
 Interface  LIN 2.0/2.1
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