Feature:1. Detection Range: This air quality monitor can detect PM2.5, PM10, HCHO, CO2, TVOC, temperature and humidity parameter, with real time and accurate measurement.2. Alarm Clock Function: This multifunctional air monitor has a personalized alarm function, which can set 2 sets of alarms simultaneously and provide date and week display.3. Backlit LCD Screen: The detector adopts LCD display screen with 3 levels backlight brightness, 0% for full off, 40% for low brightness, 100 percent for high brightness mode.4. Applicable Scenes: This monitor can be directly measured after being turned on, no need for outdoor calibration, suitable for room, wooden furniture, car interior, office area, etc.5. Battery Powered: This multifunctional air detector features rechargeable lithium battery with a capacity of 2400mAh to ensure long endurance, with USB cable for charging.Specification:Item Type: Air Quality DetectorProduct Functions: AQI, HCHO, TVOC, PM2.5, PM10, CO2, Temperature, Humidity, Calendar, Alarm ClockDisplay: LCD ScreenWorking Voltage: 5VBattery: 1 x Rechargeable Lithium Battery 2400mAh (built in)Temperature: 0-70PM2.5: 0-999ug/mHCHO: 0-9.999mg/mAQI: 0-500Humidity: 0-99%RHPM10: 0-999ug/mTVOC: 0-9.999mg/mCO2: 0-5000PPMTypeUnitGoodSlight PollutionModerate PollutionSerious PollutionAQI/0-100100-150150-300>300HCHO(mg/m)0-0.10.1-0.20.2-0.5>0.5TVOC(mg/m)0-0.60.6-1.51.5-3.0>3PM2.5(ug/m)0-7575-100100-150>150PM10(ug/m)0-100101-150150-200>200CO(ppm)0-5051-100100-200>200CO2(ppm)0-799800-15991600-2000>2000.Package List:1 x Air Quality Detector1 x User Manual1 x USB Cable