Feature: 6 in 1 Air Quality Monitor: Come and try this new multi-functional air quality monitor, compared with other air quality monitors, this monitor can detect PM2, 5, PM10, HCHO, tvt, CO and CO2. Large screen: This air quality monitor has a large screen that allows you to see air quality data. test more clearly and you can get the results easily. Portable Size: This monitor is small in size, you can use it on your desktop without taking up too much desktop space, and it is also easy to carry around. Wide range of applications: This CO2 monitor can be used in home, office, office, hotel and other places. Built-in multiple sensors : This air quality monitor uses infrared sensing techlogy, laser sensing techlogy and electrochemical sensing techlogy to show you accurate data. Qu Other alarm colors: There are four different colors to indicate the different quality of air being monitored: green for good air quality and colors ranging from yellow to orange to red for poor air quality. &39;air. Temperature unit conversion: The temperature unit can be switched between Celsius and Fahrenheit, and a sound prompt will be issued when the monitoring data exceeds the standard. Specification: Material: ABS White pm2.5 detection range: 0-999ug/m PM10 detection range: 0-999ug/m HCHO detection range: 0-9,999mg/m tvt detection range: 0-9,999mg/ m Carbon moxide detection range: 0-1000ppm CO2 detection range: 400-5000PPM Charging method: USB interface Type-C 500mA Battery: 1 lithium battery, 1200mAh (t included) Product size: 90*70*35mm/3.5*2.8*1.4in Size of package: 118 x 115 x 48mm / 4.6 x 4.5 x 1.9in Package weight: 200g / 7.1oz Packing List: 1 * Air Quality Monitor"