GasAlert Extreme Ammonia Meter

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The Gas Alert Extreme detectors have been discontinued by Honeywell and replaced with the BW Solo Gas Detectors


A compact, affordable detector that reliably monitors Ammonia (NH3) levels in natural or industrial environments.

This meter was designed with durability in mind and the field-replaceable battery and sensor offer extended longevity. A wide range of options, a multi-language display and standard datalogging functionality make the GasAlert an ideal solution for personal safety monitoring, checking ambient air conditions, training, research and a variety of other applications.

With its easy on/off operation and a self-test of the sensor, battery and alarms at start up, the GasAlert Extreme is incredibly simple to use.


  • Continuous LCD shows real-time gas concentrations
  • Datalogging is a standard feature on all GasAlert units
  • Equipped with internal, vibrating alarms as well as bright, visual alarm notifications
  • Built-in concussion-proof housing and stainless steel alligator clip             
  • Tamper-proof settings with passcode protection
  • Compact, Lightweight, Water-resistant design
  • Simple automatic calibration procedure
  • Multi-language support in English, French, German, Spanish, and Portuguese


  • Range: Two Models Available
    • 0-100 ppm (2002952)
    • 0-400 ppm (2002953)
  • Power: 3V Battery (replaceable)
  • Battery life: 1.5 years (typical)
  • Weight: 2.9 oz. (82 g)
  • Dimensions: 1.1” x 2.0” x 3.75” (2.8 x 5.0 x 9.5 cm)


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  • 3
    Calibration needed

    Posted by Unknown on Feb 5th 2019

    Calibration is the main sticking point with this meter, about twice a year it will need to be calibrated. Trying to find a business that does that has not been easy. Meter is accurate and easy to use - clips on to a vest or a pocket