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Net Safety™ Millennium ST Electrochemical Toxic Gas Detector
The Net Safety Millennium ST Electrochemical Toxic Gas Detector utilizes electrochemical gas sensing technology to continuously monitor for a wide range of toxic gas types.
Enclosed in a compact and explosion-proof housing, this toxic gas detector features a power disconnect switch to simplify maintenance, a clearly visible scrolling LED display for calibration and configuration, and meter jacks for easy current loop monitoring. This toxic gas detector works with the Millennium ST Series of gas sensors.
Net Safety™ Millennium ST Electrochemical Toxic Gas Detector


Operating Temperature
H2S: -40 °C to +50 °C (-40 °F to +122 °F)
Enclosure Rating
Stainless Steel: 3.5 lbs (1.4 kg)
Aluminum: 1 lb (0.4 kg)
Humidity Range
0-95% non-condensing
Class I Division 1 Groups BCD T5
Ex d IIB+ H2 T5
Class I Zone 1 AEx d IIB +H2 T5
Ex d IIB+H2 T5 Gb
2 years


  • Low operating voltage
  • Long range (+2,000 ft.) sensor separation
  • Numerous ppm ranges, full range of gas toxicity
  • Two wire sensor separation reduces installation costs
  • Intuitive menu system, simple set-up and calibration
  • CSA certified
  • Analog or relay configurations
  • Explosion-proof, Class I, Division 1


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