Fangrui Product Details 1. 8-in-1 Air Quality Detector Pm2.5 Pm1.0 Pm10 Hcho Tvoc O3 Temperature Humidity Monitor 2. Product Description: 3. This Product Is A Multifunctional Air Quality Detector That Detects Ozone( O3), Total Volatile Organic Compounds (tvoc), Particulate Matter <2.5 Micron-sized Particles (pm2.51.010), Temperature, And Humidity With Clock And Record Function. As A Scientific Air Quality Detection Device, It Combines Multiple Air Sensors With A Built-in Fan To Allow Real-time Monitoring Of Ozone(o3), Total Volatile Organic Compounds (tvoc), Pm2.51.010, Temperature, And Humidity On Its Digital Lcd Display. 4. Features: 5. 2.8 Inch Color Liquid Crystal Display (lcd), 320x240 Pixels 6. User Adjustable Alarm Threshold For Ozone(o3) To Alert User Of Elevated Levels 7. Test Variables: Pm2.51.010, Ozone (o3), Tvoc, Temperature, Humidity 8. Large 1200mah Capacity Lithium Battery 9. On-board Fan To Draw In Ambient Air For More Accurate Real-time Results 10. 5v Micro Usb Charging 11. Low Battery Warning 12. Product Specifications 13. Display Method: 2.8 Inch Lcd Screen Display, 320 X 240 Pixels 14. Atmospheric Pressure: 86kpa-106kpa 15. Detection Method For Pm: Laser Scattering 16. Sampling Time: 1.5 Seconds 17. Product Size: 155 X 87 X 35mm 18. Detection Temperature: -10-50 Degrees Celsius; 14 -122 Fahrenheit 19. Relative Humidity: - 20. Storage Temperature: -10-60 Degrees Celsius; 14- 140 Fahrenheit 21. Concentration Unit For Tvoc: Mgm 22. Concentration Unit For O3: Ppm 23. Power Source: Lithium Battery With 1200 Mah Capacity; 5v Dc Power Charging Via Micro Usb Port 24. Product Weight: 350g