<p>• 【A 5-in-1 Multifunction Air Monitor 】Qingping 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.<br />• 【High Accuracy and Fast Responding】Inside the air monitor, there are reliable, fast responding and stable sensors from top level 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.<br />• 【Works with Apple HomeKit and Qingping+ app】As this is a Wi-Fi device (2.4GHz Wi-Fi ONLY), you can check data remotely/export historical data on Qingping+ app (available on App Store/Google Play). For Apple Home app users, check the 5 metrics remotely or set automation with an Apple home hub; for automation on temperature/humidity, the iPhone needs to be upgraded to iOS 15.1 or later, and the hub should be upgraded to the latest version.<br />• 【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 a touch screen.<br />• 【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 few minutes, you can change settings in Qingping+ app to let it stay on without power supply if needed</p>