Extech CO100 Air Quality Carbon Dioxide Monitor
Measures Carbon Dioxide (C02), Air Temperature and Humidity with user-adjustable high/low alarms. Checks for Carbon Dioxide (CO2) concentrations. Maintenance free NDIR (non-dispersive infrared) CO2 sensor. Indoor Air Quality displayed in ppm with Good (0 to 800ppm), Normal (800 to 1200ppm), Poor (>1200ppm) indication. Displays Year, Month, Date, and Time. Max/Min CO2 value recall function.