Features: Made from premium material, has high durability and outstanding texture. Detects CO2, temperature and humidity. Built-in high-precision sensor, has high sensitivity, stability and response speed. With large display screen, you can read the data clearly. Specifications: Material: ABS Color: Black Voltage: D C 5V Function: CO2/Temperature/Humidity Monitoring CO2 Measuring Range: 400-5000ppm CO2 Measuring Accuracy: 1ppm Temperature Measuring Range: 0-50 Temperature Measuring Accuracy: ±1 Humidity Measuring Range: 0-99%RH (Non-Condensing Environment) Humidity Measuring Accuracy: ±2%RH Power Supply: Built-in Lithium-Battery Battery-Capacity: 1200mAh Item Size: 90 * 70 * 40mm / 3.54 * 2.75 * 1.57in Item Weight: 150g / 5.29ounces Package Size: 115 * 113 * 45mm / 4.53 * 4.45 * 1.77in Package Weight: 178g / 6.28ounces Note: 1.Due to the different display screen and light effect, the actual color of the item might be slightly different from the color showed on the pictures. 2.Please allow a little measuring deviation due to manual measurement. Package List: 1 * Detector 1 * Charging Cable 1 * User Manual