[6 in 1]: Intelligent quality detector, real-time monitoring of 6 environmental parameters such as PM25, formaldehyde, TVOC, carbon dioxide, temperature and humidity, to protect family health at all times.[Multiple Sensor]: Built-in semiconductor sensor, PM25 infrared sensor and temperature/humidity sensor, sensitive induction, quick detection of multiple gases, comprehensive coverage, more accurate and reliable.[Work with APP]: Connecting to the Tuya APP via WiFi, real-time display of the detection value, so that indoor pollution or healthy index easy to read. You can also preset the alarm value, when the detected value exceeds the preset value, it will automatically alarm.[Intelligent Linkage]: It supports intelligent linkage with conditioners, fans, humidifiers, purifiers, etc. through Tuya APP to automatically optimize the environment and maintain a healthy living environment for you.[Reliable Quality]: High-quality housing, sturdy and fall-resistant, long service time. With multiple vents, the detector has nice ventilation and is more accurate for detection in quality.[Wide Application]: Small size, portable and practical, it is very suitable for home, office, school, warehouse, agricultural planting, etc. Support 2 installation methods, you can put it on the desktop or mount it on the wall.Working Voltage: 5V, 1AWorking Current: 10-496mACommunication Protocol: WIFI 24GHzWorking Temperature: -20-85Formaldehyde Range: 0-1000mg/mVOC Range: 0-999ppmCO2 Range: 0-1000ppmTemperature Range: 0-60Humidity Range: 0-95%PM25 Range: 0-1000ug/msize:10x10x4cmMaterial:plasticcolour:WhitePackage Contents:1 * Quality MonitorOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.