Properties: *6 in 1 Air Quality Monitor: Try this new multifunctional air quality monitor that can simultaneously detect PM2.5, PM10, HCHO, TVOC, CO and CO2 compared to other air quality monitors. *Large display: This air quality monitor has a large screen that allows you to see your test data more clearly and get the results easily. *Portable size: This monitor is small, you can use it on your desk without taking up too much desk space, and it is easy to carry. *Wide range of applications: This CO2 monitor can be used at home, office, train station, hotel etc. use. *Built-in multiple sensors: This air quality monitor uses infrared detection technology, detection technology and electrochemical detection technology to provide you with accurate data. *Four-color alarm: There are four different colors to indicate the different quality of monitored air: green for good air quality, and colors from yellow to orange to red for poor air quality. *Changing the temperature unit: The temperature unit can be switched between Celsius and Fahrenheit. If the monitoring data exceeds the standard, an acoustic signal is emitted. Specifications: Material: ABS Color: black, white (optional) PM2.5 Range: 0-999ug/m3 PM10 Scope: 0-999ug/m3 HCHO detection range: 0-9.999mg/m3 HCHO detection range: 0-9.999 mg/ m3 TVOC: 0-9,999 mg/m3 CO detection range: 0-1000ppm CO2 detection range: 400-5000PPM Charging Mode: 500mA Type-C USB interface Battery: 1*Lithium battery, 1200mAh (included) Item size: 90*70*35mm/3.5*2.8inch Pack weight: 200g/7.1oz Scope of delivery: 1 Air detector 1.USB cable