Edwards EST URSM

Universal Riser Supervisory Module

Condition: New
Brand: Edwards, EST
Status: Active
SKU: 43213
Manufacturer Part #: URSM


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.

Additional information

Weight 5 lbs


Production Status



  • 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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Universal Riser Supervisory Module URSM


EST - Data Sheet