Feature:Specification:This product is a simple and reliable measuring instrument that combines ease of use and performance, it allows you to track 4 key air quality factors: TVOC, HCHO, CO2, PM2.5.Features:This product adopts environmentally-friendly material, bracket design which is more comfortable to use. Conveniently placed in every corner of the home, truly real-time comprehensive detection of air quality problems.High accuracy, use air analysis technology to accurately locate tiny harmful components in the air to ensure sensitivity to substances such as formaldehyde.Avoids the cumbersome data when using, adopt the pollution level division mechanism, the level is clear and easy to read and take anti-pollution measures earlier.Battery is selected to ensure long-term standby time and long-term monitoring time without any omission.Orderly, at a glance, four levels of classification, throwing away cumbersome data reading, making the review easier.Specifications:Screen size: 2.8inDetection error: less than 15%Sampling speed: less than 3 secondsBattery: 3.7V, 1000mAhStandby time: about 4-6 hoursDetection range: formaldehyde, TVOC, carbon dioxide, PM2.5, PM10 detection average recording functionItem size: 148 * 70 * 30mm / 5.8 * 2.8 * 1.2inPackage size: 160 * 80 * 45mm / 6.3 * 3.1 * 1.8inPackage weight: 276g / 9.7ouncePackage list:1 * Air Quality Tester1 * USB Cable1 * User ManualPackage List:1 * Air Quality Tester1 * USB Cable1 * User Manual