Siemens QPM2160D IAQ Duct CO2, Temperature Sensor, 0-10V, Display

Siemens QPM2160D IAQ Duct CO2, Temperature Sensor, 0-10V, Display. Siemens QPM Series Indoor Air Quality Duct Sensors are made to optimize room comfort. Various models measure CO2, temperature, relative humidity and volative organic compounds, or a combination thereof.