Extech Carbon Monoxide (CO) Meter

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Fast response measurements to 1000ppm

  • Easy to read 1999 count backlit displays CO levels from 0 to 1000ppm
  • 1ppm resolution with ±5% or ±10ppm basic accuracy (whichever is greater)
  • Utilizes a stabilized electrochemical gas specific (CO) fast response sensor
  • Audible alarm starts at 35ppm
  • Backlight for low light conditions


  • Ergonomic pocket size housing
  • One button operation
  • Easy to read 1999 count backlit displays CO levels from 0 to 1000ppm
  • Audible alarm starting at 35ppm with continuous beeping when above 200ppm
  • Backlight for low light conditions
  • Max Hold and Data hold buttons
  • Auto Power off
  • Complete with 9V battery, protective rubber holster, and carrying case

    • Ambient air safety checks on residential appliances
    • HVAC service on furnaces and hot water heaters
    • Home inspections
    • Industrial environments where the accumulation of CO is possible



  • Range: 0 to 1000ppm
  • Resolution: 1ppm
  • Accuracy: 5% or ±10ppm
  • Sensor Type: Stabilized electrochemical gas specific (CO)
  • Sensor Life: 3 years (typical)
  • Power: one 9V battery
  • Dimensions: 6.3x2.2x1.57" (160x56x40mm)
  • Weight: 6.35oz (180g)


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