The five-in-one multifunctional air monitor Air Monitor Lite can test the five major factors of indoor air quality: PM2.5 (the result of second-hand smoke), PM10, CO2, temperature and humidity. By knowing the real-time air quality, you can turn on the air purifier or open the windows when needed. The high-accuracy, fast-response air monitor features reliable, fast-response, and stable sensors from top sensor manufacturers. 5 readings are refreshed every second. The air inlet grille design on the back allows the sensor to fully contact the air. This product is not waterproof/dustproof, please do not leave this product in an environment with a humidity higher than 90% for a long time. Works with Apple HomeKit and + App Since this is a Wi-Fi device (2.4GHz Wi-Fi only), you can check data/export remotely on the + App (available on App Store/Google Play) historical data. For Apple Home app users, you can check 5 metrics remotely or set up automation using the Apple Home Hub; for temperature/humidity automation, the iPhone needs to be upgraded to iOS 15.1 or later, and the hub should be upgraded to the latest version. Clear OLED display and responsive touch bar Pixel-style UI design is displayed on the clear OLED screen for wider viewing angles and more fun. Multi-color indicator lights let you know your room's air quality, temperature and humidity levels at a glance from a distance. You can tap or swipe the touch bar at the top to switch readings as smoothly as operating a touch screen. Rechargeable lithium battery with battery life of up to approximately 7 hours Built-in 2000mAh lithium battery with battery life of approximately 7 hours. We recommend keeping it plugged in at all times. A USB-C cable is included. IMPORTANT: When running on battery, the default setting is to automatically turn off the product after a few minutes, if desired you can change the setting in the + app to keep it on without power.