1、Providing real time monitoring and real time display of carbon dioxide concentration per cubic meter. 2、Detect and display the temperature and humidity of the environment to help users understand the environment. 3、This air quality monitor is suitable for offices, homes, gymnasiums and other occasion, with a wide range of applications. 4、Intelligent and colorful display, the number is clear and easy to read, providing more convenience. 5、Under intelligent alarm system, the air quality monitor will remind the users to notice the environment by changing the color. Item Type: Air Quality Monitor Material: ABS Voltage: 5V Current: 500mA Battery: 18650 Polymer Lithium Battery 1800mAh (Included) Carbon Dioxide Measurement Accuracy: 1ppm Carbon Dioxide Measurement Range: 400-6000 ±50 ±5% PPM TVOC Measuring Range: 0-2.0mg/m³ HCHO Measuring Range: 0-0.6mg/m³ Temperature Measurement Range: -10-50℃ Temperature Measurement Accuracy: ±2℃ Product Size: Approx. 8.9 x 7 x 3.5cm / 3.5 x 2.75 x 1.37in Humidity Measurement Range: 0%-99%RH Humidity Measurement Accuracy: ±3%RH Product Size: Approx. 9 x 7 x 3.5cm / 3.54 x 2.75 x 1.37in Weight: Approx. 207g / 7.3oz 1 x Air Quality Monitor 1 x USB Cable 1 x User Manual