-Material:ABS -Product Size& 65306;155*87*35MM -2.8 LCD screen display, 320 x 240 pixels -PM2.5 Sensor technolology : Laser Scattering -O3(ozone) technolology :Electrochemistry sensor -TVOC technolology: Semiconductor sensor -Processor : ARM ,High-speed complex calculations -Temperature and Humidity sensor, detect Temp,Hum. -Detection range: AQI(0-500) PM2.5 ( 0-999 ug/M3 ) O3(0.000-5.000ppm/M3) TVOC(0.001-9.999Mg/M3) -Power supply& 65306;rechargeable Li-battery 1200mah -Included:Main Unit+manual+charging cable Advantage : -Integrated detection with O3/PM2.5/TVOC/Temperature/Humidity -Built-in auto calibration algorithm to enhance sensibility and save -Exceeding Alarming with auto detection and auto measuring -if people do not like alarm sound ,people can turn it off by pressing the power button 2 times -User-friendly and easy operation DM502-O3 package details& 65306; Product N.W.& 65306;150g Product G.W.& 65306;300g Package Dimension& 65306;19.5*12.5*4cm CTN Dimension& 65306;58.5*21.0*40.0cm CTN Weight:15.4Kg 46sets/CTN