Monitor CO2 Carbon Dioxide concentrationsTriple LCD simultaneously displays CO2, Temperature and HumidityVisible and Audible CO2 warning alarm when concentration level exceeds high or low user set pointMin/Max CO2 value monitorDesktop or wall mountComplete with Universal usb cableWHAT IS THE IMPORTANCE OF CO2 MONITOR?CO2 is not an air pollutant, but it can still have a negative effect on us when levels are too high.When levels rise, we tend to get sleepy and have trouble focusing, and some people even develop headaches.compatible with this reason, it is important compatible with occupants to have CO2 monitor to stay at a healthy level.Colour:WhiteMaterial:plasticPackage Contents:1 x Air Quality Detector1 x USB CableOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.