Extech Desktop Indoor Air Quality CO2 Monitor - CO100

In stock

This instrument monitors and displays the CO2 content of the air, the air temperature, humidity and overall air quality. Great for offices, homes, warehouses, barns and greenhouses.

Extech Desktop Indoor Air Quality CO2 Monitor - CO100

Measures Carbon Dioxide (CO2), Air Temperature and Humidity with user adjustable visual and audible alarm


  • Checks for Carbon Dioxide (CO2) concentrations (0 to 9,999ppm)
  • Displays Temperature 14 to 140°F (-10 to 60°C)
  • Displays Relative Humidity (0.1 to 99.9%) readings
  • Maintenance free NDIR (non-dispersive infrared) CO2 sensor
  • Indoor Air Quality displayed in ppm with Good, Normal and Poor indications
  • Visible and Audible CO2 warning alarm
  • Displays year, month, date and time
  • Max/Min CO2 value recall function
  • Automatic baseline calibration (minimum CO2 level over 7.5 days) of manual calibration in fresh air
  • 1 year warranty
  • Comes complete with a universal AC adaptor

Indoor air quality is important for a healthy and efficient work environment. With high CO2 levels people work less efficiently, are in a more drowsy state and can experience headaches. Humidity control is also important, where low humidity can cause dry skin and high humidity can cause the growth of mold or mildew.

Temperature can also affect how people work and is the most important factor in over all comfort. The Desktop Indoor Air Quality CO2 monitor tests all of these factors and displays readings on a large LCD screen. This instrument is great for monitoring offices, homes, warehouses, barns or greenhouses. The CO100 Desktop Air Quality CO2 Monitor User Manual is attached to this page to answer any further questions.


  • Carbon Dioxide (CO2): 0 to 9,999ppm
  • Resolution: 1ppm
  • Temperature: 14 to 140°F (-10 to 60°C)
  • Resolution: 0.1°F/°C
  • Humidity: 0.1 to 99.9%
  • Resolution: 0.1%
  • Dimensions: 4.3 x 4.1 x 2.4" (110 x 105 x 61mm)
  • Weight: 8.1oz (230g)

Unit Ship Weight: 1.5 lbs

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