Features: You can use it in your home, outsdoor, in your car and wherever you want. With a of functions, you can meet a of detection needs. sensors, such as carbon dioxide sensor, dust laser-sensor, TVOC sensor, temperature and humidity sensor, make the detection results more accurate and professional. History records,you can compare the data and see the change. Detection range: (0-500), PM2.5 (0-999ug or M), CO2( 0-5000ppm), TVOC(0.001-9.999Mg or M) ARM processor, fast computing speed, more accurate detection results. It can detect PM2.5 PM1.0 PM10 CO2 TVOC Temperature Humidity. Specifications: Material: Metal Color: Black Battery: 1 x lithium battery, 3000mAh (included) Charging : DC5V -USB Display : 4.3in LCD screen display Atmospheric pressure: 86Kpa-106Kpa Sensor for CO2: infrared (NDIR) Detection for PM: laser-scattering Sampling time: 1.5 seconds Detection temperature: -10C-50C Relative humidity: 20 percent -85 percent Storage temperature: -10C-60C Concentration unit for CO2: PPM Concentration unit for PM: or m Concentration unit for TVOC: mg or m Item size: 131 x 78 x 67.5mm or 5.2 x 3.1 x 2.7in Package Contents: 1X Air Quality Detector 1X USB charging cable 1X English Manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.