Desktop Indoor Air Quality Co2 Monitor

Checks for Carbon Dioxide (CO2) concentrationsMaintenance free NDIR (non-dispersive infrared) CO2 sensorIndoor Air Quality displayed in ppm with Good (0 to 800ppm), Normal (800 to 1200ppm), Poor (>1200ppm) indicationUser programmable Visible and Audible CO2 warning alarmMeasurement ranges:CO2: 0 to 9,999ppmTemperature: 14 to 140F (-10 to 60C)Humidity: 0.1 to 99.9%RHDisplays Year, Month, Date, and TimeMax/Min CO2 value recall functionAutomatic Baseline Calibration or manual calibration in fresh air