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Mark IV Hydrogen Gas Detector

SKU 099140
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The hydrogen gas detector protects battery charging rooms and other locations where motive and stationary batteries are present by monitoring hydrogen gas levels. Lead-acid batteries on charge emit hydrogen gas after reaching the 80% recharge point. Concentrations of 4% to 75% mixed with air can be explosive. Sparks or hot surfaces can ignite them. The hydrogen gas detector will provide a warning and facilitate dissipation of the hydrogen, by operating alarms and exhaust fans before it reaches the lower explosive limit of 4%.

In addition to protecting your property and employees, cost savings are also realized. Insurance premiums may be reduced as a result of a hydrogen gas detector installation. Electricity costs decrease as a result of controlled exhaust fan operation rather than continuous fan operation. Air conditioning and heating costs are also reduced as a result of the controlled fan operation.

Two models are available: AC or DC, Optional accessories include steel junction box for mounting on wall or ceiling, remote panel for eye level placement, and modular cable for connecting the remote to the detector.


  • Continuous monitoring of hydrogen gas levels
  • Automatic operation
  • An 80-db warning alarm, and remote excaust fan with alarm activation
  • LED status display
  • Simple Installation
  • Reliable, highly sensative, highly stable, solid state sensor
  • Simple Installation
  • Long operating life


  • Protects against battery charging room explosions
  • Inexpensive protection for your property and employees
  • Decreases electricity costs as a result of controlled exjaust fan operation
  • Insurance premium reduction may be realized
  • Reduces air conditioning and heating costs as a result of controlled fan operation
  • Reliable, uninterrupted 24/7 monitoring and control
  • Simple operation
Click here to learn more about our safety guidelines, regulations, resources and more.

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