and High Quality This product needs to be used with ZigBee 3.0 Smart box is the home of intelligent device for remote monitoring of environment,It can also detect formaldehyde, VOC of poisonous gas, CO2, temperature, humidity and so on 5 kinds of environmental parameters,In environmental parameters exceed bid automatically when the graffiti conditioning, new fan, humidifier, purifier on household environment optimization.The detection range of the smart box: formaldehyde, VOC gas, CO2, temperature, humidityExamination range: Formaldehyde: 0-10.0 (mg/m3) VOC: 0-99.9 (ppm) Carbon dioxide: 0-1000 (ppm) Temperature: 0-60 () Humidity: 0-95 (%)After being paired to the APP, it can be linked with various products. For example, when detecting excessive formaldehyde/VOC, the smart purifier is automatically turned on; when the carbon dioxide is exceeded, the smart fan is automatically turned on; when the temperature is abnormal, the conditioner temperature is automatically adjusted ; When the humidity is too low or too high, the smart humidifier will be turned on/off automaticallywhen a certain parameter is detected to exceed the standard, a message will be sent to the alarm (the above smart linkage function needs to be matched with the product)material: plasticColor as shownUpdate 1:Visible Quality, quality level indicatorGood quality shows green light,Severe pollution shows red light.Update 2: pollution exceeing,80 decibels alarmIf the pollution exceeds the standard, an 80-decibel alarm will be triggered, and an alarm message will be sent to the mobile phone to link other Tuya devicesSpecifications:Working temperature: -20--85Working voltage (rated): 4.8-12VWorking current: 10-496maSize: 90 x 90 x 35mm supply mode: USB 5V/1ACommunication protocol: ZigBee3.0Notes:please do not put box at lampblack is too big, strong convection or in high concentration organic gas for a long time, otherwise it will damage the sensor.This product needs to be used with ZigBee 3.0 Package Contents:1 x Quality MonitorOnly the above package content, other products are not included.Note: Light reflection 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.