Ⅰ. Come and try this type of air quality detector, compared with other air quality detectors, this detector can display 6 different detection results at the same time, and the detection function is more comprehensive. If you are looking for an air quality monitor, try it. Ⅱ. 6 Air Quality Checker in One: Come and try this type of air quality detector, compared with other air quality detectors. test PM2.5, PM10, HCHO, TVOC, CO and CO2 at the same time Ⅲ. Large screen: This air quality monitor with a large screen, so you can see the detection data more clearly, you can easily get the results. Ⅳ. Portable size: This monitor is small in size and you can use it on your desk without taking up too much space on the desk, and it is also easy to carry Ⅴ. Wide applications: This CO2 monitor can be used in your home, office, desktop, hotel and other places. Ⅵ. Multiple Sensors: This air quality monitor uses infrared detection technology, laser detection technology and electrochemical detection technology to display accurate data. Ⅶ. Four-color signal: There are four different colors to indicate different characteristics of the monitored air: green color means air. the quality is good, and the colors from yellow to orange to red mean poor air quality Ⅷ. Temperature unit conversion: The temperature units can be switched between Celsius and Fahrenheit, and when the monitoring data exceeds the standard, a sound will be emitted Ⅸ. Specifications:Material: ABSPM2.5 detection ranges: 0-999 ug/m3PM10 detection ranges: 0-999 ug/m3HCHO detection ranges: 0-9,999 mg/m3 TVOC detection ranges: 0-9,999 mg/m3CO detection ranges: 0-1000 detection ranges PPMCO2 0PP400: USB 500 mA Type-C interface Battery: 1 * lithium battery, 1200 mAh (included) Product size: 90 * 70 * 35mm / 3.5 * 2.8 * 1.4in Ⅹ. Package Included:1x0 Air Quality Monitor