Description Product description: 1. Various Detectable Gases: The indoor air quality monitor with built-in electrochemical sensors can accurately detect formaldehyde (HCHO), volatile organic compounds (TVOC), and particulate matter (PM2.5/PM10) in the air. These readings involve the detection of toluene, harmful chemicals and pollutants in the air. 2. New Design: The unique mold designed air quality monitor with LCD color digital display can provide an average value for each gas, because long-term monitoring, real-time data is unstable. 3. Easy to Operate: Just pre the function button to easily operate the air monitor. The easy-to-read numbers and the support of the alarm sound will let you know if your air is unsafe. Built-in 1200 mAn rechargeable battery is included. A USB cable, standby time can last 4-6 hours. 4. LCD High-definition Display: The display is equipped with a 2.8-inch LCD display, which directly and clearly displays each piece of air data (ug/m3 and ppm), while providing average value, real-time value, and environmental recommendations to perfectly display air quality. 5. Wide Application: Widely used in homes, offices, enterprises, governments, schools and automobiles. Detect and monitor air problems at any time to ensure the health of family members or employees. Specification: Name: Air Quality Detector Material: ABS Screen size: 2.8 inches LCD high-definition color screen Detection error: 15% Formaldehyde detection range: 0.000-1.999mg/m TVOC detection range: 0.000-1.999mg/m PM1.0/PM2.5/PM10 detection range: 0-999ug/m Temperature measurement range: 0-50 Humidity measurement range: 20~90%RH Battery: 1200mAh lithium battery Standby time: about 240-360 minutes Charging time: about 4 hours Life time: about 2 hours USB interface: Type-c interface Input voltage: 5V/1A Working environment: 5-40, 90%RH Product size: about 15.1x6.9x4.5 cm/5.94*2.72*1.77in Packing size: about 18.7*10.2*6.8 cm/7.36*4.02*2.68in Packing List: 1*Air Quality Tester 1*USB Charging Cable 1*User Manual