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RKI PS-2 Model Single Point Stand Alone Monitor

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Price: From $425.00 to $495.00

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Replacement Sensors Only

A perfect low cost solution for hydrogen detection in battery rooms, or for LEL or PPM level detection of a variety of flammable or solvent vapors in general industry.

The Model PS 2 is a multipurpose gas monitor utilizing a MOS (metal oxide sensor) for long lasting and low maintenance detection at the LEL or PPM levels of many gases or vapors. The PS 2 has two alarm levels for increasing gas or vapor levels, at the PPM level for detection of many solvent vapors, or for LEL level detection of flammable vapors. Inquire at the factory for your specific requirement. Each alarm level activates a 12 amp relay inside the unit, and terminals are provided for wiring the relay to activate an external alarming device or some other device such as a ventilation fan.

This stand alone unit is housed in a durable plastic enclosure with flanges provided for wall mounting and is designed with easy access wiring hubs on the bottom of the unit. The front of the PS 2 contains three lights; Pilot, Alarm 1, and Alarm 2. An internal audible alarm (85 db) is also built in which activates in a gas alarm condition.

The standard PS 2 is supplied with the gas sensor located on the end of a 30 foot cable (other cable distances are also available). Each unit is powered by 115 VAC standard or 24 VDC as standard (48 VDC versions optional), and the AC version comes complete with a 6′ power cord.

The PS 2 is provided as standard with the sensor on a 30’ cable. Both 24VDC powered or 115 VAC powered versions are available, and the 115 VAC version is supplied with a 6’ power cord. (Specify gas & alarm points when ordering)

Please contact us if you would like assistance with pricing or configuring a system quotation.


  • LEL or PPM detection ranges available for many gases
  • 2 alarm levels
  • Stand alone system
  • Input voltages: 115 VAC standard, 24 VDC or 48 VDC (optional)
  • Audible and visual alarms
  • Compact design
  • Simple installation
  • AC version equipped with power cord
  • Relay contacts rated 12A @ 115 VAC
  • Low maintenance


  • Battery storage locations
  • Petrochemical plants
  • Refineries
  • Water & wastewater treatment plants
  • Degreasers
  • Gas, telephone, & electric utilities
  • Manufacturing facilities
  • Steel
  • Automotive
  • HVAC

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