Siemens QPM2100 Carbon dioxide duct sensor optimizes room comfort by allowing for demand-controlled ventilation. The sensors may acquire concentrations of CO2 and volatile organic compounds ( VOC), relative humidity, and temperature. The sensor assesses concentrations of CO2 / VOC and transforms it into a linearly proportional output signal of 0 to 10 Vdc. A capacitive wetness sensing element changes capacitance as a function of relative humidity for models with humidity.

Application: ventilation, air conditioning conference rooms, auditoriums and office spaces.