Large LCD Display: Large screen allows you to browse the data more clearly, makes it more convenient for elderly and children, giving you a better experience. Portable Size: The small size of this tool is very convenient for everyday use, you can put it on a desktop without taking up too much space. 6 In 1 Detecting: It display the detecting tempeature, humidity, PM2.5, TVOC, CO2 and CH2O . Wide Applications: This detector is suitable for indoor air quality detecting, and can be widely used in your home, living room, bedroom, office and other places. Easy To Operate: One button open design allows you to use this tool easily. Specifications: Type: Tuya WiFi PM2.5 measuring ranges: 0-999ug/m³ Resolution: 1ug/m3 Temprature data: 0~60℃ Humidity measuring ranges: 0-99%RH TVOC measuring ranges: 0-3mg/m³ Resolution: 0.001mg/m³ CO2 measuring ranges: 400-5000PPM CH2O measuring ranges: 0-3mg/m³ Resolution: 0.001mg/m³ Battery: 1 x lithium battery, 1200mAh (included) Material: ABS colour: black Package Contents: 2 x Air Quality Detector 2 x Cable 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.