It is a handheld CO2 Monitor 3 in One equipped with advanced Infrared ( NDIR ) sensor to allow real-time monitoring of carbon dioxide (CO2), temperature and humidity on its LCD display.it is portable, allows you to carry the Handheld CO2 Detector wherever needed with ease. 

The simple and intuitive operation interface and clear button settings make it effortless for even novice users to get started. Just turn it on and start measuring, with real-time display of CO2 concentration,temperature, humidity, enabling you to stay informed of the environmental conditions at all times. When the carbon dioxide (CO2) concentration exceeds the standard ,it will sound an alarm to remind you to take corresponding safety measures.