Extech CO230 Indoor Air Quality Monitor



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  • Carbon dioxide range: 0 to 9,999ppm
  • Maintenance free NDIR (non-dispersive infrared) CO2 sensor
  • Automatic Baseline Calibration (ABC)
  • Triple LCD simultaneously displays CO2, temp, humidity
  • Visible and audible CO2 warning alarm
  • Calculates dew point and wet bulb
  • Temp range: 14 to 140°F (-10 to 60°C)
  • Humidity range: 0.1 to 99.9%

What's in the Box

  • Universal AC adaptor
  • Multiple plug types (US, EU, UK, AUS)

The Extech CO230 Indoor Air Quality Monitor measures carbon dioxide (CO2), air temperature and humidity, plus calculates dew point and wet bulb. The CO230 features automatic baseline calibration (ABC) with disable for use in areas with continuously elevated CO2 levels. Its alarm function with user settable high/low CO2 level is perfect for monitoring air quality and ensuring proper air ventilation in conference rooms, schools, greenhouses, factories, hotels, hospitals and anywhere that high levels of carbon dioxide are generated.