Feature:1. Premium Detection: This air quality monitor is more than enough to detect CO2, temperature, humidity, TVOC, PM2.5, PM1.0, pollen and so on.2. Better in Control: Able to work in conjunction with home ventilation system to help control the auto ventilation, humidification and more.3. 7in Clear Display: Equipped with 7in large display, the air quality and temperature and humidity levels are displayed through color grading.4. Has High Accuracy: Has wide test range and high sensitivity, the accurate results makes the CO2 monitor ideal for home, factory, office, etc.5. Simple to Install: Light in weight and compact in size as well, the temperature humidity tester is very convenient to install in minutes.Specification:Item Type: Air Quality MonitorModel: PT02 PlusTemperature Measurement Range: -20~60, 2. Humidity Measurement Range: 5%~95% RH, 5% relative humidity. Carbon Dioxide Measurement Range: 400-5000ppm. Carbon Dioxide Accuracy: 50ppm or 5% of reading. CO Measurement Range: 0-999PPMCO Accuracy: 10ppm or 10% of reading. TVOC Measurement Range: 0-19.99mg/m. TVOC Resolution: 0.01mg/m. Pollen Measurement Range: 0-500 G/m. Pollen Accuracy: 0-100G/m, 25G/m, 101~500G/m, reading 25%. PM1.0 Measurement Range: 0-500G/m. PM1.0 Accuracy: 0-100G/m, 10G/m, 101~500G/m, reading 10%. PM2.5 Measurement Range: 0-500G/m. PM2.5 Accuracy: 0-100G/m, 10G/m, 101~500G/m, reading 10%. Pollen, PM.0, PM2.5 Resolution: 1G/m. .Package List:1 xAir Quality Monitor1 x User Manual1 x Power CordNote:Please use a attached 5V 2A plug cable for testing, otherwise it may affect the test results.