1、[High Accuracy] Real time monitoring and display of carbon dioxide concentration per cubic meter, with accurate measurement results. 2、[Color Screen] Intelligent color screen display, clear numbers, easy to identify and read, can detect carbon dioxide, TVOC, HCHO. 3、[With Alarm Mode] In the alarm mode, by changing the color to remind the user to pay attention to the environment, you can use it with confidence. 4、[Portable And Save Space] Made of high quality ABS material, compact and portable, easy to carry, does not take up too much space, and saves space. 5、[Widely Application] Can detect and display the temperature and humidity of the environment, widely used in offices, homes, gyms, etc. 1 x Air Quality Detector (Battery Included)1 x USB Data Cable1 x Manual Item Type: Air Quality DetectorMaterial: ABSVoltage: 5VCurrent: 500mABattery: 18650 polymer lithium battery 1200mAh (Battery Included)CO2 Detection Range: 400-5000PPM ±50 ±5%PPMCO2 Resolution: 1PPMTVOC Detection Range: 0- 2.0mg/m³HCHO Detection Range: 0- 0.6mg/m³Temperature Detection Range: -10-50℃Temperature Detection Resolution: ±1℃Humidity Detection Range: 0%-99%RHHumidity Detection Resolution: ±2%RHProduct Size: Approx. 9.1 x 7.1 x 3.7 cm / 3.6 x 2.8 x 1.5 inWeight: Approx. 179g / 6.3oz