[Multifunctional Air Quality Monitor]This CO2 monitor can accurately detect carbon dioxide (CO2), formaldehyde (HCHO), volatile organic compounds (TVOC), CO, in the air in real time. Carbon monoxide detection range: 0-2400PPM. CO2 detection range: 0-5000PPM. Formaldehyde detection range: 0-1.999mg/m. TVOC detection range: 0-12mg/m. [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 in time after use) [-capacity rechargeable battery]The air quality detector has a built-in -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 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 . 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 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.