RM4 Smart Relay Lets You Trigger Extra Gear When Your Smoke Heat Or CO Alarm Goes Off 120V AC Powered Works With Compatible Detectors And Lets You Add A Strobe Siren Bell Or Door Closer For Bigger Alarm Coverage

Expand alarm coverage with the RM4 smart relay single unit
✔️ 120V AC powered; adds strobe, siren, or door closer to alarms

The RM4 Smart Relay is a practical add-on that lets BRK or First Alert detectors trigger external devices when the alarm sounds. It’s a smart way to extend alert coverage in homes and on job sites, letting you pair strobes, bells, sirens, or door closers with your existing detectors.

✅ Expand coverage with compatible BRK/First Alert detectors
✅ 120V AC powered for easy wiring and reliable operation
✅ Connects to strobe lights, sirens, bells, or door closers
✅ Simple, fast installation for quicker job-site turnarounds

💡 What is a smart relay and how can it help alarm systems?

A smart relay lets your alarm system trigger extra gear when the detector goes off, widening safety reach.

• Expands safety by driving auxiliary devices on alarm trip
• Works with BRK/First Alert detectors for coordinated alerts
• Allows adding strobes, bells, or door closers for bigger coverage
• Uses standard 120V AC power for easy installation