BRK RM4 120V AC Smart Alarm Relay

120V AC Smart Alarm Relay

Designed to activate an auxiliary device when an alarm is initiated. The RM4 Relay is intended for use with BRK and First Alert Smoke, Heat and Carbon Monoxide Alarms. The relay contacts will activate whenever any interconnected alarm sounds. The relay contacts will automatically deactivate a few seconds after the alarm stops sounding. The RM4 may be wired next to an AC alarm or from a remote location. This relay must be installed in a junction box.

Interconnects smoke alarms, carbon monoxide alarms and heat alarms with:

  • Lights
  • Bells
  • Door Closers
  • Sirens
  • Exit Signals
  • Escape Lights
  • Exhaust Fans
  • Other Auxiliary Devices


Dimensions: 3.5 L x 1.5 H
Weight: 2.2 oz
Operating Voltage: 120V AC 60Hz
Operating Current: .02 amps (standby/alarm)
Temperature Range: 40°F (4°C) to 100°F (38°C)
Humidity Range: 10% to 90% relative humidity (RH)
Interconnections: Up to 18 units of First Alert or BRK Smoke, CO and
Heat Alarms. Maximum of 12 smoke alarms.
Listing: Meets UL217, UL2034, UL539,ULC S-531,
CSA6.19 and ULCS-530 for accessories.

  • Model: BRK RM4
  • 32 Units in Stock
  • Manufactured by: BRK Electronics

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