This device is a multifunction air quality detector 10 in 1 measures multiple parameters including AQI, HCHO (formaldehyde), TVOC, PM2.5, PM10, CO, and CO2.The display shows current environmental readings such as a CO2 level of 1952 ppm and a temperature of 26.0°C.The unit features a colorful LCD screen for displaying data like particulate matter and volatile organic compounds.