Air Quality Monitor Accurate Tester for CO2 Formaldehyde(HCHO) TVOC PM2.5/PM10 Professional Multifunctional Air Gas Detector with Real Time Data&Mean Value Recording for Various Occasion · This air quality meter can be used to measure the concentration of PM2.5. It also can measure the formaldehyde and carbon dioxide concentration. · Can detect HCHO/TVOC/CO2/PM2.5/PM10. · Large LCD display with wide viewing angle,convenient for your reading. · Rreal-time local outdoor air quality readings and real time gas monitoring to prevent any respiratory disease. · It can be used for family, laboratory, offices, hotels, schools, factories, conference rooms, airports, hospitals, restaurants, and many other public places. Features: Portable handheld air detector of CO2, PM2.5, PM10, HCHO, TVOC and each vlaue's environment result. Easy to read numbers surrounded by LCD Color Screen Digital Display with air quality light indication and support of an mean value will let you know if you air is unsafe and you need to take some actions. Specifications: Material: ABS Test Function: HCHO/TVOC/CO2/PM2.5/PM10 Detection Technology: Air Natural Flow Detection Technology Display mode: LCD LCD color screen digital display Error Floating: 3%-30% Working Voltage: 5V Start-up preheating: 120 seconds (only: formaldehyde TVOC CO2 sensor) Battery capacity: 2000 mAh Power:5W Charging time: about 4-6 hours Standby time: about 240-360 minutes Detection range: PM2.5 Test Range: 0~6000g/m?3; TVOC Test Range: 0.000~2.000mg/m?3; (D9-B, D9-D, D9-H) HCHO Test Range: 0.000~2.500 mg/m?3; (D9-D, D9-H) CO2 Test Range: 400~4000ppm (D9-H) Size:148x70x30mm/5.77x2.73x1.17in Color: Shown as picture Package list: 1 *air quality detector 1 *instruction manual 1 *USB charging cable