feature: 6 in 1 Air Quality Monitor: Come and try this new multifunctional 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 which allows you to see the test data 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. 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 technology, laser sensing technology, and electrochemical sensing technology to show you accurate data. Four Colors of Alarm: There are four different colors to indicate the different quality of the air being monitored: green for good air quality and colors ranging from yellow to orange to red for poor air quality. air quality. 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: 0-9.999 mg/m tvt detection range: 0-9.999 mg/m Carbon monoxide detection range: 0-1000ppm CO2 detection range: 400-5000PPM Charging method: USB Type-C interface 500mA Battery: 1 lithium battery, 1200 mAh (not included) Product size: 90*70*35mm/3.5*2.8*1.4in Package size: 118 x 115 x 48 mm / 4.6 x 4.5 x 1.9 inch Package Weight: 200g/7.1oz Packing list: 1 * Air Quality Monitor Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.