[A 5-in-1 Multifunction Air Monitor] Air Monitor Lite tests 5 major factors of the indoor air quality: PM2.5 (the result of secondhand smoke), PM10, CO2, temperature and humidity. By knowing the real-time air quality, you can turn on the air purifier or open the window when needed. [High Accuracy and Fast Responding]Inside the air monitor, there are reliable, fast responding and stable sensors from sensor manufacturers. The 5 readings refresh ever second. The air inlet grille design at the back enables sufficient contact between the sensors and the air. The product is NOT waterproof/dustproof, please do not place this product in environment with humidity higher than 90% for long term use. [Works with and + app]As this is a Wi-Fi device (2.4GHz Wi-Fi ONLY), you can check data remotely/export historical data on + app (available on /). For users, check the 5 metrics remotely or set automation with an home hub; for automation on temperature/humidity, the needs to be upgraded to iOS 15.1 or later, and the hub should be upgraded to the latest version. [Clear OLED Display and Sensitive Touch Bar]Pixel style UI design shows on a clear OLED screen, enables bigger visible angle and more fun. Through the multi-colored indicator, you will know the air quality, the temperature and the humidity level of your room, with a glance from a distance. You may tap or slide the touch bar on the top to switch the readings as smoothly as to operate screen. [Rechargeable Lithium Battery with 7-hour Battery Life]The built-in 2000mAh Lithium battery is with up to 7 hours battery life. We recommend plugging it into power all the time. There is a USB-C cable supplied. IMPORTANT: When running on battery, the default setting is to turn off the product automatically after a fewminutes, you can change settings in + app to let it stay on without power supply if needed. Support multiple measurements:PM2.5, PM10 ,CO2, Temperature , Humidity LED Display Color Work with USB-C charging Power input:5V , 1A Battery:Lithium 2000mAh/3.7V Size:63.6x46x54.6mm Weight:143g Measuring Range: PM2.5/PM10:0~500ug/m3; Temperature: 0C~50C Humidity: 0~99%RH CO2:400~9999ppm Wireless Connectivity:Wi-Fi 2.4GHz,Bluetooth 5.0 Display:Single-color OLED,59.9 x 49.9mm Support platform: for , for Mi Home( Home), for + Colour:White Material:ABS Package Contents: 1 x Air Quality Detector 1 x usb cable Only 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.