As formaldehyde and airborne particles become more and more harmful to human health, are you increasingly concerned about the air quality around you Our air quality monitor is especially designed to gives you a comprehensive understanding of the air quality around you, including HCHO, TVOC, pm1.0, pm2.5, pm10, temperature and humidity. Firstly, our data showed will be more accurate due to the effective accessories, such as built in turbine, 4 high-precision sensors and ARM processor computing chips. Secondly, because of its portability, you can use it anywhere you want to test the air quality, home or office, indoor or outdoor. Most importantly, in order to let you better access and understand the data, our detector has real-time recording and alarm function. Features: Comprehensive data including HCHO, TVOC, pm1.0, pm2.5, pm10, temperature and humidity More accurate testing result, Real time record, displaying the data in the form of charts Lightweight and portable, ideal for bedroom, living room, office, hotel, car and traveling use Equipped with a high-capacity lithium battery, quick charge and long standby time Built in a turbine, making testing more quickly and stably 4 high-precision sensors and ARM processor computing chips Built in 1500mAh capacity lithium battery with long stand by time With USB cable, Easier charging Large LCD screen with English interface easy and clear to read Do calibration well on initial use, otherwise, data may be inaccurate. Specifications: Color: Black Material : ABS Overall Dimension: 2.5" (L) X 1.5" (W) X 6" (H) Net Weight: 0.5 lbs Input: 5.0V or 1A Battery Capacity: 1000mAh Lithium Battery Cord Length: 32" HCHO Test Range : 0.000-1.999 mg or m3 TVOC Test Range: 0.000-9.999 mg or m3 PM1.0 or PM2.5 or PM10 Range: 0-999g or m3 Temperature Test Range: 0-50 Humidity Test Range: 20-90 percent RH Working Environment: 5-45