1.Checks for Carbon Dioxide (CO2) concentrations with Max/Min value recall function
2.Maintenance free NDIR (non-dispersive infrared) CO2 sensor
3.Indoor Air Quality displayed in ppm with Good (380 to 420ppm), Normal (<1000ppm), Poor (>1000ppm) indication
4.Visible and Audible CO2 warning alarm
5.Displays Year, Month, Date, and Time
6.Automatic Baseline Calibration (minimum CO2 level over 7.5 days) or manual calibration in fresh air
NiMH battery, gift box with carrying case.
No customer comments for the moment.