![Air Quality Monitor,](https://images-na.ssl-images-amazon.com/images/G/01/x-locale/common/grey-pixel.gif)
Types of alerts
Our device has two types of alarms: audible and visual. The 6.5 "large LCD screen displays real-time data on CO2, HCHO, TVOC, temperature, and humidity. 4-color alarm reminder: green represents fresh air, yellow represents turbid air, orange represents severe air pollution, and red represents severe hypoxia. When the carbon dioxide content reaches 2000PPM or above, all four colors flash simultaneously.