[Protect Your Every Breath] Since means a lot to every one, the 5-in-1 air quality monitor will be your best . It can accurately monitor CO2, TVOC, HCHO, humidity& temperature. You can monitor the environment at any time.[Accurate & Reliable] Equipped with a fast-responding and sensitive high-performance chip,NDIR Sensor, the air quality monitor can precisely capture the weak currents generated during electrochemical reactions. Dual color & voice alerts keep you informed of the current air quality conveniently.[Low Power Alerts]Built with 1200mAh rechargeable battery and packaged with one 5V USB cable, the standby time can last for 10 hours. Never be anxious about low power.[Safety Design] The mesh design allows for better heat dissipation during operation, preventing the device from hot, and more accurate measurement data.[Warm Notice] notice that this air quality monitor is designed for indoor spaces, so the door & windows testing. Or the data may not be accurate. We recommend using the monitor and keeping it working for at least 60 minutes reading the data.Colour:WhiteMaterial:ABSSize:9.8x6.7x3.2cmPackage Contents:1 * air quality monitor1 * usb cableOnly 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.