[Multifunctional Air Quality Monitor]This CO2 monitor can accurately detect carbon dioxide (CO2), formaldehyde (HCHO), volatile organic compounds (TVOC), CO, AQI in the air in real time. Carbon monoxide detection range: 0-2400PPM. CO2 detection range: 0-5000PPM. Formaldehyde detection range: 0-1.999mg/m³. TVOC detection range: 0-12mg/m³.   [Full Color LED Screen Display]With a 1.81-inch LED screen digital display design, this air quality monitor is very easy to read, and the real-time data is clearly displayed. (Need to be charged in time after use)   [Large-capacity rechargeable battery]The air quality detector has a built-in large-capacity rechargeable battery, and the standby time is up to 5 hours. You can check air quality from anywhere, or have the device monitor continuously at a specific location. Always take care of the health of you and your family.   [Easy to Operate]Once the air quality meter is turned on, it will automatically measure the surrounding air quality for you. The air quality monitor has three easy-to-operate buttons.   [Multipurpose]This air quality monitor is suitable for home air detection, car air detection, mother and baby room air detection and public place detection, very suitable for indoor homes, schools, offices and other occasions.      size: 85 x 51 x 17mm   Material: plastic   colour: blue white      Package Contents:    2 x Air quality detector