Smart Sensor Air Quality Monitor Gas Meter PM2.5 HCHO TVOC TEMP Detector Analyzer Handheld Tester Temperature Humidity Testing            Features: 1.Portable monitor for detect PM2.5,TVOC, HCHO, temperature and humidity 2.Respond quickly, detect precisely, sound,light two types alarms indication 3.High quality plastic material,have a long life 4.Rechargeable battery,USB powered 5.Large LCD screen backlight display, can read in dark            Description: 1.Auto power off,4.7inch LCD screen 2.°/° unit switchable 3.Widely used in factory, home, office, and public place            Specification: Brand:Smart Sensor Model:AR830A Color:white Battery Type: 3.7V Li-ion battery Operation Temperature: 0-45° PM2.5 Range: 0-999ug/m⊃3 HCHO Range: 0-5.00ppm  TVOC Range:125-999PPb   Sample Mode:Laser beam scattering Size:126 x 65 x 35mm Weight:173g            Package Information: Package Weight: 673g/1.48lb Package Size: 253 x 210 x 57mm/9.96 x 8.27 x 2.24 in General Box Package            Package Included: 1 x Air Quality Monitor 1 x USB Cable 1 x Adapter 1 x Battery(Not including package) 1 x Stand 1 x Hook Accessory 1 x Carry Case 1 x User Manual