The duct sensor QSM2100 measures the concentration of fine dust particles PM2.5 and PM10 in heating and air conditioning systems. The output is a moving average of the latest data from the sensor over the last 10 seconds. It is capable of communicating with all controllers processing signals of 0...10 V / 0...5 V / 4...20 mA.

This sensor is not intended as a warning safety signal for smoke or gas leaks. Additionally, the sensors are not designed for outdoor use.