Features: This air quality detector is an great instrument for monitoring indoor air quality. Simultaneously detect PM2.5 and VOC(volatile organic compounds). Can indicate PM2.5 pollution level and 1-hour average amount. Also can measure the current temperature and humidity. Temperature can be displayed in Celsius(°C) or Farenheit(°F). Large LCD screen with bright backlight, convenient to use. Suitable for house, shopping
mall, bus station and other places.