Edwards EST URSM

Universal Riser Supervisory Module

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Brand: Edwards ESTFireAlarm.com Part #: URSM Manufacturer Part #: URSM Categories: , Tag:


The URSM module is a circuit card required to supervise the integrity of audio risers or fire fighter’s telephone system risers. The URSM will supervise two riser circuits. The risers may be any combination of fire fighter’s phone risers or audio power risers. Each riser is supervised for opens and shorts. Upon failure of a riser circuit, its associated fault relay circuit will activate. The URSM is powered from the nearest system power source. The trouble fault contacts may be connected to a supervisory zone for system fail notification.

Standard Features

  • Supervises two audio power risers
  • Supervises two fire fighter’s telephone risers
  • Optically isolated supervision inputs
  • One Form C trouble relay contact per circuit
  • Built-in transient suppression
  • 24 Vdc powered
  • 1/2-size footprint module
  • Low standby current
  • Supervises 25 V or 70 V audio risers

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Weight 5 lbs
Dimensions 5 × 5 × 5 in


EST URSM Data Sheet

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