Feature:1. MULTIPLE FUNCTION: This air quality monitor can be used to detect CO2, PM2.5, PM1.0, PM10, temperature and humidity, which is convenient and practical.2. HIGH SENSITIVITY: The air quality detector adopts air convection technology to ensure flexible and stable operation, accurate and reliable measurement.3. 4.3 INCH LCD: The CO2 detector adopts 4.3 inch LCD screen, multi color screen and full angle of view, the values can be clearly seen from any angle.4. TIME DISPLAY: This air quality detector has a time display function, can be used at any time, suitable for home, office, factory, and classroom, etc.5. POWER SUPPLY: The air tester adopts Micro USB interface connection, with a built in 3000mAh rechargeable lithium battery and a USB cable for charging.Specification:Item Type: Air Quality MonitorBattery: 1 x 3000mAh Rechargeable Lithium Battery (built in battery)Atmospheric Pressure: 86Kpa-106KpaPM2.5 PM1.0 PM10 Detection Range: 0-999ug/mCO2 Detection Range: 400-5000ppmDetection Temperature: -10-50; 14-122Relative Humidity: 20%-85%.Package List:1 x Monitor1 x USB Cable1 x User Manual