Features:1. Real-time monitoring and real-time display of carbon dioxide concentration per cubic meter.2. It can detect and display the temperature and humidity of the environment to help users understand the environment.3. It is suitable for offices, homes, gymnasiums and other occasions, with a wide range of applications.4. Intelligent color screen display, clear numbers, easy to identify and read.5. In the alarm mode, the user is prompted to pay attention to the environment by changing the color.6. It has a long service life and can be charged with a USB cable.7. It is small and portable, easy to carry, does not take up too much space, and can be installed at home. Notice:1.Actual color may be slightly different from the image due to different monitor and light effect2.Please allow 1-3cm deviation due to manual measurement Description:Material: ABSMeasurement accuracy: 1ppmMeasuring range: 400-6000Working voltage: 3.7VCurrent: 120mAPower: 0.4WBattery: 3.7V, 1500mAhSize: 89 * 70 * 35mm Package List:1 x Carbon Dioxide Detector1 x USB Cable1 x Manual