The danger level of harmful gases such as formaldehyde and TVOC is intended for static monitoring to automatically capture the impact on environmental health. Thanks to the chips ARM, most of the world's smartphone processors are produced by ARM with 32-bit high-speed processing performance, which greatly increases the calculation speed, more accurate sensing and higher smoothness. Air quality test formaldehyde detector with built-in electrical chemical sensors can accurately detect carbon dioxide (CO2), formaldehyde (HCHO), volatile organic compounds (TVOC) and particulate matter (PM2, 5/PM10) in the air. These readings involve the detection of toluene, harmful chemicals and pollutants in the air. The air quality tester is widely used in homes, offices, businesses, governments, schools, etc. Colorful screen, intelligent control, stable, fast, you can get the accurate figure easily.