High-performance chip detection is more accurate; the product uses imported brand air quality detection and analysis chips to ensure more accurate instrument detection. Full control of the key switch: long press the power button for 3 seconds to turn on or off, after turning on the formaldehyde, TVOC, CO2 sensor, it needs 120 seconds to warm up, 0001-0120 warm up timer. Full-color large screen is intuitive to read: LED LCD color screen digital display, clearer display, intelligent detection Scientific and technological calculations make detection more convenient. Large-capacity battery has long life time: 1000 mAh large-capacity battery, 240 minutes standby time, can be repeatedly charged to save costs, USB charging, 24-hour testing. Thousands of accuracy levels: for formaldehyde HCHO, chemical pollutants TVOC, carbon monoxide CO, carbon dioxide CO2, 0.001mg/m3, the accuracy is improved again.