Features: 6 In 1 Air Quality Tester: Come and try this type multifunctional air quality detector, compared with other air quality detectors, this detector can testing PM2.5, PM10, HCHO, TVOC, CO and CO2 for you at the same time. Large Display Screen: This air quality monitor with a large display screen for you to see the detecting data more clearly, you can get the results easily. Portable Size: This monitor is small in size and you can use it on your desk without taking up too much desk space, also easy for you to carry. Wide Applications: This CO2 monitor can be used in your home, office, destop, hotel and other places. Built-in Multiple Sensors: This air quality monitor using infrared detection technology, laser detection technology and electrochemical detection technology to show you the accurate data. Four Color Alarm: There are four different color to show the different qualities of the air being monitored: The green means the air quality is well and the colors ranging from yellow to orange to red mean worse air quality. Temperature Units Conversion: The temperature units can be switch between degrees Celsius and Fahrenheit and when the monitoring data exceeds the standard, sound will be emitted to indicate. Specifications: Material: ABS Color: black, white (optional) PM2.5 detecting ranges: 0-999ug/m PM10 detecting ranges: 0-999ug/m HCHO detecting ranges: 0-9.999mg/m TVOC detecting ranges: 0-9.999mg/m CO detecting ranges: 0-1000PPM CO2 detecting ranges: 400-5000PPM Recharging method: USB 500mA Type-c interface Battery: 1 * lithium battery, 1200mAh (included) Item size: 90 * 70 * 35mm / 3.5 * 2.8 * 1.4in Package size: 118 * 115 * 48mm / 4.6 * 4.5 * 1.9in Package weight: 200g / 7.1ounce Packing list: 1 * Air Quality Monitor