---
product_id: 8212228
title: "BRK RM4 Smart Relay for First Alert"
brand: "first alert"
price: "AR$101254"
currency: ARS
in_stock: true
url: https://www.desertcart.com.ar/products/8212228-brk-rm4-smart-relay-for-first-alert
store_origin: AR
region: Argentina
---

# 120V AC powered relay Triggers auxiliary devices instantly Seamless interconnectivity with First Alert alarms BRK RM4 Smart Relay for First Alert

**Brand:** first alert
**Price:** AR$101254
**Availability:** ✅ In Stock

## Summary

> 🔔 Amplify your alarm’s power—because safety deserves a smart upgrade!

## Quick Answers

- **What is this?** BRK RM4 Smart Relay for First Alert by first alert
- **How much does it cost?** AR$101254 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/8212228-brk-rm4-smart-relay-for-first-alert)

## Best For

- first alert enthusiasts

## Why This Product

- Trusted first alert brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Job Site Efficiency:** Easy installation speeds up project timelines—trusted by professionals for rapid deployment.
- • **Versatile Activation:** Automatically triggers strobes, sirens, bells, door closers, and more to amplify your alarm system’s reach.
- • **Effortless Integration:** Connects flawlessly with BRK & First Alert smoke, heat, and CO detectors for a smarter safety network.
- • **Power-Packed Performance:** Operates on reliable 120V AC power ensuring consistent activation of your auxiliary devices.
- • **Enhanced Safety Ecosystem:** Transforms your alarm into a multi-device alert system, elevating home and workplace security.

## Overview

The First Alert BRK RM4 Smart Relay is a 120V AC-powered device that automatically activates auxiliary safety devices like strobes and sirens when connected to compatible BRK and First Alert smoke, heat, or carbon monoxide detectors. Designed for easy installation and professional-grade reliability, it enhances alarm effectiveness by creating a connected safety network that meets industry standards.

## Description

First AlertBRK RM4 Smart Relay for First Alert

## Features

- Activates auxiliary devices when alarm device sounds
- Works with compatible BRK and First Alert smoke, heat, and carbon monoxide detectors
- 120V AC powered
- Enhances the effectiveness of your detector alarm
- Great for adding a strobe light, siren, bell, door closer, or similar device
- Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Connector Type | [Proprietary] |
| Contact Type | Normally Open |
| Mounting Type | Door Mount |
| Brand | First Alert |
| Operation Mode | Automatically |
| Coil Voltage | 120 Volts |
| Maximum Switching Voltage | 120 Volts |
| Minimum Switching Voltage | 120 Volts |
| Number of Terminals | 3 |
| Specification Met | Smoke & Carbon Monoxide Alarm Standards and Interconnect Standards |
| UPC | 029054175007 029054000576 |
| Manufacturer | First Alert / BRK Brands, Inc. |
| Part Number | RM4 |
| Item Weight | 0.01 ounces |
| Product Dimensions | 3.5 x 0.1 x 1.5 inches |
| Item model number | RM4 |
| Is Discontinued By Manufacturer | No |
| Color | 1.5 |
| Power Source | Corded Electric |
| Item Package Quantity | 1 |
| Included Components | (1) Alarm Relay, Installation Instructions |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Connector Type:** [Proprietary]
- **Contact Type:** Normally Open
- **Mounting Type:** Door Mount
- **Brand:** First Alert
- **Operation Mode:** Automatically

## Images

![BRK RM4 Smart Relay for First Alert - Image 1](https://m.media-amazon.com/images/I/617CnTxx84L.jpg)

## Frequently Bought Together

- First Alert BRK RM4 Smart Relay for First Alert
- First Alert Hardwired Heat Alarm with Battery Backup, BRK Brands HD6135FB
- BRK First Alert 9120BFF/ SMI100-AC Smoke Detector, Hardwired Alarm with Battery Backup, White, 1-Pack

---

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---

*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-02-20*