Extech CO200 Desktop Air Quality CO2 Monitor with Digital Display

Extech CO200 Desktop Air Quality CO2 Monitor with Digital Display uses a maintenance-free NDIR (non-dispersive infrared) sensor to measure CO2 levels and also takes temperature and humidity readings. The Extech CO200 has user-settable high and low alarms to alert to unsafe levels, can be used as a clock, and is an easy way to monitor indoor temperature and humidity.