1、5 in 1 Multifunctional: The carbon dioxide detector can detect carbon dioxide, temperature, humidity, formaldehyde and TVOC, so that you can intuitively view the air quality of living space. 2、Anti Interference: The ABS carbon dioxide meter adopts semiconductor sensor, has quick speed, good accuracy, stable performance, anti interference, low consumption and a long service life. 3、Different Front Colors: Equipped with a large screen, different font colors display different air quality, the 1500mah carbon dioxide tester is convenient for you to view at any time. 4、Good Heat Dissipation: The ABS temperature detector has left and right ventilation holes, not only accelerate the convection between the air and the machine, so as to realize effective detection, but also provide a good heat dissipation effect. 5、Wide Application: The humidity meter is suitable for school, hospital, restaurant, shopping mall, office, home and so on, a wide range of application. Item Type: Carbon Dioxide Detector Material: ABS, Electronic Components Weight: Approx. 213g/7.51oz Color: As Shown Size: Approx. 9x7x3.5cm/3.54x2.76x1.38in Carbon Dioxide Detection Range: 400-6000ppm, Accuracy: 1ppm TVOC Detection Range: 0-2mg/m³ HCHO Detection Range: 0-0.6mg/m³ Temperature Measurement Range: -10 Degree Centigrade to 50 Degree Centigrade, Accuracy: ±2 Degree Centigrade Humidity Measurement Range: 0 Percent-99 Percent RH, Accuracy: ±3 Percent RH Battery: 18650 1500mah Built In Rechargeable Lithium Battery (Delivered with Battery) 1 x Carbon Dioxide Detector 1 x Data Cable 1 x Use Manual