Features:1. Wide range of application: the air quality detector is small in size and easy to carry. It can be placed indoors in offices classrooms hospitals and other places.2. The high sensitivity sensor ensures high accuracy of data collection.3. Multi-purpose air quality detection not only can detect the carbon dioxide level in the air in real time but also can display the temperature and humidity of the surrounding environment.4. Built-in 1200mAh rechargeable battery which can be used continuously for a long time after fully charged.5. Large screen colorful display wide angle view up to 180.Specifications:Product size: 118*70*34MMPackage size: 160MM*80MM*45MMWeight: 226GBattery capacity: built-in battery 1200MA 3.7VMeasuring range.HCHO=0-1.712mg/m3TVOC=0-12.50mg/m3PM25=0-1000ug/m3PM10=0-1786ug/m3 includes: 1 x Air Quality Detector