Feature: 1. 【7in1 Air Quality Tester】: This detector can be used to test and display the concentration of PM2.5, PM10, carbon dioxide, TVOC, HCHO, temperature and humidity at the same time. Real-time detection, automatic refresh data. With alarm function, support alarm threshold setting. 2. 【High Accurate Sensors & Chip】: Uses high-precise sensors, with high sensitivity, superior interference resistance ability, stable working performance, with low power consumption. Adopts high working performance chip for accurate data processing. 3. 【Digital Color Display】: This air quality tester with a large digital color display, display backlight on/off adjustment, you can the data is clearly visible and the screen is not dazzling. 4. 【AQI Air Quality Level Indication Function】: Equipped with air quality level division function, use different color to show the different quality of the air being monitored, allowing you to more accurately and more visual know the current air conditions. 5. 【Strong Heat Dissipation】: Hundreds of ventilation holes reserved on the housing not only accelerate the convection between the air and the machine, thereby realizing effective detection, but also provide a fine heat dissipation effect. 6. 【Wide Applications】: Built-in lithium battery with low power consumption and long endurance. USB interface for convenient charging, suitable for long-term use in various scenarios, such as agricultural planting, greenhouse vegetables, production warehouse, material processing, home interior, business offices, and etc. Specification: Name: Air Quality MeterMaterial: ABSBattery: 1 * 800mAh lithium battery (included)Display: digital color displayItem size: 90 * 110 * 40mm / 3.54 * 4.33 * 1.57inPackage size: 150 * 120 * 50mm / 5.91 * 4.72 * 1.97inPackage weight: 320g / 11.29ounce Package List: Packing List:1 * Air Quality Meter