Extech Handheld Indoor Air Quality CO2 Meter

Extech Handheld Indoor Air Quality CO2  Meter


The Extech Handheld Indoor Air Quality CO2 Meter is perfect for conducting a quick check of CO2 levels to help adjust the environmental conditions in an enclosed area, such as a greenhouse or nursery, to ensure optimal plant growth.


  • Dual Display Of Carbon Dioxide Concentrations And Relative Humidity, Temperature, Dew Point, Or Wet Bulb
  • Maintenance Free NDIR (Non-Dispersive Infrared) Carbon Dioxide Sensor
  • Audible Carbon Dioxide Warning Alarm With Concentration Level Exceeds High User Set Point
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Why Buy From Fondriest?


Easy-to-use Extech CO240 Air Quality Meter measures Carbon Dioxide (CO2), Air Temperature, and Humidity. It also calculates Dew Point and Wet Bulb. It’s also convenient for testing the air quality in buildings such as factories, hospitals, conference rooms, schools, and anywhere that high levels of carbon dioxide are generated, to ensure proper air ventilation.


  • Software for on-line (real-time) data streaming to a PC
  • Automatic Baseline Calibration function 
  • Data hold and Auto Power Off (with disable) function 
  • Low battery indicator 
  • Tripod mount (tripod sold separately) 
  • Audible CO2 warning alarm when concentration level exceeds high user set point 
  • Min/Max CO2 value recall function
Notable Specifications:
  • Carbon Dioxide: 0 to 9,999ppm
  • Temperature: 14 to 122°F (-10 to 50°C)
  • Humidity 10 To 90% RH
  • Dew Point:  -99.22 to 118°F (-72.9 to 47°C)
  • Wet Bulb: 12.2 to 118.8°F (-11 to 48.2°C)
  • Dimensions: 8.3 x 2.4 x 1.6"
What's Included:

(6) AAA Batteries

(1) USB Cable

(1) PC Software

(1) Universal AC Adapter With 4 plugs US, EU, UK, AUS

(1) Soft Case

Image Part # Product Description Price Stock Order
Extech Handheld Indoor Air Quality CO2  Meter CO240 Handheld Indoor Air Quality CO2 Meter
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