Feature:1. 7IN SCREEN: The tester is equipped with a 7in screen, convenient for data viewing and monitoring, choose it with confidence!2. DETECTABLE OBJECTS: The tester can measuring carbon dioxide, humidity, temperature, TVOC, PM2.5, PM1.0.3. COLOR DISPLAY: The air quality and temperature and humidity level are indicated by color grading, which can be seen from a distance.4. ACCURATE MEASUREMENT: Adopts premium industrial grade sensors, and the data is determined to 1, making the air detection more accurate!5. ABS MATERIAL: Made of premium ABS material, the tester is strong, sturdy, wear resistant, scratch resistant and ensures a long life span.Specification:Item Type: Air Quality DetectorMode: PT02Color: SilverMaterial: Fireproof ABSProduct Voltage: AC100-240VLarge Screen Display: 7in LCD large screenDetectable: Carbon dioxide, humidity, temperature, TVOC, PM2.5, PM1.0Temperature Detection Range: - 20 to 60 ; 2Humidity Detection Range: 5% to 95% RH; 5%RHCO2 Detection Range: 400 to 5000ppm, accuracy 1ppmCO2 Detection Accuracy: 50ppm or 5% readingTVOC Detection Range: 0 to 20mg/m PM1.0 Detection Range: 0 to 500 g/m PM2.5 Detection Range: 0 to 500 g/m Operating Temperature: 0 to 50 Operating Humidity: 0 to 95% (non condensing)Output Wiring: RS485Applicable APP: For graffiti smart appUse: Household, kitchen, bar, restaurant, office, warm and wet greenhouse, etc..Package List:1 x Air Quality Detector 1 x Charging Cable 2 x Manual