1Formaldehyde detection range is 0 10.0 mg/m3, VOC is 0 99.9 ppm, carbon dioxide is 01000ppm, temperature is 0 60, humidity is 0 95%. 2When it detects that the formaldehyde/VOC exceeds the standard, the smart air purifier will automatically turn on, when the carbon dioxide is exceeded, the smart fan will automatically turn on. 3Can detect 5 environmental parameters, formaldehyde, volatile organic compound of toxic gases, carbon dioxide, temperature, humidity. 4When the environmental parameters exceed the standard,for Tuya smart will automatically optimize home air conditioners, fans, humidifiers, and home environment. 5Use for Tuya Smart APP or for Smart Life APP to remotely control or view device usage. For Zigbee need to be used with for Zigbee gateway and the gateway is connected to WIFI(not include gateway). Item Type: Air Quality Monitor Material: PVC Uses: Home, office, apartment, hotel Power Supply Mode: USB 5V/1A Communication Protocol: WIFI 2.4GHz Detection Range (Formaldehyde): 0 - 10.00mg/m3 Detection Range (VOC): 0 - 99.9ppm Detection Range (CO2): 0 - 1000ppm Detection Range (Temperature): 0 - 60 Detection Range (Humidity): 0 - 95% 1 x Air Quality Monitor 1 x USB Cable 1 x Repositor 1 x Fixed Plate 1 xManual