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EPS40-1 - System Sensor

EPS40-1 - System Sensor

DST5 - System Sensor

DST5 - System Sensor

EOLR-1 - System Sensor


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EOLR-1 System Sensor SPST Relay, ULC Approved As An End Of-Line Relay To Supervise Power Supplies.
Model EOLR-1 System Sensor is epoxy encapsulated single pull single-throw (SPST) normally open relay that is activated by 9 to 40 VDC. This relay can be used as an end of line device in fire alarm systems, e.g., to supervise power supplies.

System Sensor's multi-voltage conventional relays are used for high-current switching applications such as fan and damper assembly control, door control, air handling unit controls, and other types of system interfacing.


  • Multi-voltage operation.

  • Activation LEDs.

  • Easy and flexible installation.

  • Reliable and robust design.

  • Multipurpose field installations.

  • Multi-voltage relays with terminal strip field wiring connections, mounting track, and hardware for R-10T/20T and R-14T/24T.

  • Removable front cover on steel enclosure for R-10E/R-20E and R14/R-24E, which mount inside the enclosure.

  • LED viewing hole on top of the steel enclosure's cover.

  • Extra pair of wires for redundant power input on PR-3.

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replacement A77-716B
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