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TPI A771 Carbon Monoxide detector from Accutherm

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article image TPI A771 Carbon Monoxide detector

TPI A771 is a portable compact Carbon Monoxide detector that can be attached to a large range of TPI Digital Multi Meters and the 270X Clamp Meter. TPI A771 can also be worn as a personal CO alarm.

Test Products International (TPI) is one of the world’s leading designers and manufacturers of digital handheld test equipment and instruments. TPI portable handheld digital test equipment and instruments are sold and supported throughout Australia exclusively by Accutherm International.

  • Ideal for CO emission testing on gas heaters and other gas appliances
  • Personal Carbon Monoxide alarm
  • Rugged, reliable, accurate and affordable


  • Compatible with many digital multimeters
  • Competitively priced
  • Lightweight and compact
  • Calibrate in the field
  • CO detection
  • Use as a personal CO alarm
  • Low battery and power indication
  • Visual and audible alarm
  • Can be worn on belt

Standard accessories 

  • Soft belt pouch

Technical specifications

  • The A771 generates a 1mV per 1ppm reading of CO
  • Detects CO Levels from 0 to 1999 ppm, with resolution as low as 0.1 ppm and ±5% of reading accuracy
  • Adjustable alarm set range 0 to 200 ppm
  • Response time 90% of reading in 30 seconds
  • Operating Temperature Range (-10 to 50ºC)
  • Relative Humidity 5 to 95% RH
  • Accuracy ±5 ppm or 5% of reading whichever is greater
  • 9V alkaline battery

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