Zeiwohndc Home CO2 Detector Meter for Hanging Infrared Air Quality Detector PM2.5 Tester

This air quality monitor with unique hexagon design, can be used in home & office. Wall-mounted CO2 Meter with LED large display, easy to watch in a distance. When the arbon dioxide concentration exceeds the standard, it will automatically remind of the alarm. Automatically detect OC2, pm2.5, temperature, humidity, with for time display. Detection range: PM2.5 (0-999 ug/M³), CO2 ( 400-5000 ppm).