This 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. As formaldehyde and airborne particles become more and more harmful to human health are you increasingly concerned about the air quality around you? 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. If you are looking for air quality monitor don't hesitate to buy one. --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 1500 mAh 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.