First Alert BRK SC9120B-6 Hardwired Smoke & CO Detector with Battery Backup – 6-Pack

Overview

Meet the First Alert BRK SC9120B-6, a hardwired, 2-in-1 safety detector designed for modern homes. This six-pack delivers reliable protection by combining smoke detection with carbon monoxide sensing in one compact, white unit. It wires into your home's 120V system and includes a 9-volt battery backup to keep monitoring active when the lights go out. The quick-install design and compatibility with other BRK or First Alert hardwired CO detectors help you create a unified safety network across rooms.

Two-in-One Protection with Flexible Sensing

Equipped with both an ionization smoke sensor and an electrochemical CO sensor, the SC9120B-6 is built to detect two common hazards with one alarm. The dual-sensor approach doesn’t claim to diagnose health conditions; it helps provide an early alert if smoke or CO is present in your living space, giving you more time to react.

• Hardwired operation plus battery backup for continuous monitoring during outages
• Light indicators differentiate smoke vs CO during an alert
• Single test and silence control keeps routine checks simple

Clear Alerts, Easy Installation

The unit includes adapter plugs that reduce rewiring, and it features a latching alarm indicator. Even after alarms subside, you can quickly identify which detector initiated the alert. Tamper-resistant locking brackets and universal mounting brackets simplify securing the devices in multiple rooms.

• Tamper-resistant mounting for secure installations
• Universal brackets speed up multi-room installs
• Side-load battery compartment for straightforward battery changes

Smart Placement and Real-Life Use

Use this 6-pack to outfit bedrooms, hallways, kitchens, and living spaces where people sleep or gather. The indicator lights and easy-to-use test button offer a quick, reassuring check during routine maintenance or in the moment of an alert. Pairing with other compatible detectors can create a broader safety net across the home.

Note: This is a consumer safety device, not a medical device. It provides alerts based on sensor data and is intended to support your safety planning and awareness.

What You Get

• Six First Alert BRK SC9120B-6 hardwired smoke and CO detectors
• Adapter plugs for easier integration
• Universal mounting brackets and tamper-resistant hardware
• Quick-reference indicators and a functional test/silence control