Particular Matter Sensor PM2.5

Particulate Matter Sensor (SAPS SERIES)

PM2.5 refers to particulate matter with diameters of up to 2.5 microns, which are among the most dangerous air pollutants. Due to their small size, PM2.5 particles can travel deep into the human lung and cause a variety of health issues. Sensirion's automotive grade PM2.5 sensor solution monitors the level of those pollutants in the air inside the cabin and communicates them to the HVAC controller through LIN. Based on the information from the PM2.5 sensor, the HVAC controller can take actions to ensure low dust concentration and high air quality to increase passengers’ comfort.

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Sensirion’s ionizer generates 36,800 negative ions. When installed close to the air outlet of the passenger cabin, it creates a fresh air effect inside the passenger cabin similar to being near a waterfall or in the mountains, thereby increasing passengers’ comfort. The ionizer provides different electrical interface options (LIN or analog). It features a small and compact form factor for easy integration in the HVAC air flow channel.

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Cabin Air Temperature Sensor


The cabin air temperature sensor is used for accurate control of the temperature inside the cabin. Thanks to its built-in fan, the sensor has a fast response time, which enables the HVAC controller to reach the desired set point quickly and efficiently. The Sensirion SACT series features a low noise fan solution and a small form factor for easy installation. The product family offers various options for housing, mounting and electrical interface (LIN or analog).

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Anti-Fogging/Auto-Defrost Sensor

Anti-Fogging/Auto-Defrost Sensor (SAAF SERIES)

The relative humidity sensors in the SAAF product family are designed to accurately measure the relative humidity (RH) and temperature (T) inside the windshield, thereby enabling the climate control system to actively prevent fogging. The product family offers various options for mounting, electrical interfaces and connectors. The sensor signals are fully calibrated, linearized and temperature-compensated, allowing the SAAF product family to ensure high accuracy across a wide range of humidity and temperature conditions, including temperatures well below 0°C.

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Dew Point Sensor


Sensirion Automotive Solutions’ dew point sensor contributes to both the energy efficiency of the HVAC and comfortable humidity levels in the cabin. Mounted inside the HVAC system, the SADP sensor measures the temperature, relative humidity and dew point temperature of the air. These signals can be used by the HVAC controller to cool down the evaporator only as much as really needed to ensure a comfortable climate inside the cabin, thereby saving energy. Unnecessarily low temperatures and resulting dehumidification can thus be avoided. The SADP sensors feature easy mounting solutions with bayonet or Delphi clip as well as a standard LIN interface.

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