120V AC Smart Relay Module
The RM4 is a 120V AC-powered relay module designed for use with BRK and First Alert smoke, heat, and smart-interconnect carbon monoxide alarms. It activates auxiliary warning devices such as bells, sirens, lights, door closers, or exhaust fans whenever any interconnected alarm in the network sounds. The relay contacts automatically deactivate a few seconds after the alarm stops.
- 120V AC powered; mounts inside a standard junction box
- Form-C contacts: normally open and normally closed positions
- Maximum contact rating: 120V AC / 30V DC; 15A resistive; 1/3 HP motor
- Compatible with BRK and First Alert smoke, heat, and smart-interconnect CO alarms
- Activates auxiliary devices (bells, sirens, lights, exhaust fans, door closers)
- Supports up to 18 initiating alarms plus 6 accessories per NFPA 72
- Shrink-wrapped heat-resistant enclosure; rated 10-90% RH
- Sold in cases of 12 units