Portable CO2 indoor Air Quality IAQ Meter, Measures Carbon Dioxide (CO2), Air Temperature and Humidity. Applications includes monitoring indoor air quality in schools, office building and anywhere air quality if of concern.

The Extech SD800 CO2/humidity/temperature datalogger has a maintenance-free dual wavelength NDIR (non-dispersive infrared) CO2 sensor that checks for carbon dioxide concentration perfect for monitoring air quality in schools, office buildings, greenhouses, hospitals and anywhere that high levels of carbon dioxide are generated.