BRK First Alert 9120BFF Hardwired Smoke Detector with Battery Backup – 1-Pack

Smart safety you can rely on

Meet the BRK First Alert 9120BFF hardwired smoke detector, redesigned for quicker, more reliable alerts. This unit blends 120V AC power with a 9V battery backup to maintain monitoring even during outages. An ionization sensor targets fast flaming fires, delivering a sharp 85 dB tone that can cut through typical household sounds to grab attention when it matters most. Interconnectivity with other BRK/First Alert alarms means one trigger can raise the alarm across multiple devices, helping your home respond in sync.

Installation is designed to be straightforward and precise. The gasketless base helps align the detector quickly, while the new mounting bracket keeps the unit secure through a wide rotation range. A tamper resistant locking bracket adds security, and a dust cover protects the unit during construction. A single test or silence button makes routine checks easy, and the latching indicator shows which unit triggered the alert for faster, clearer response.

What this means for your home

• Hardwired reliability with a battery backup ensures ongoing protection during power quirks.
• Interconnects with up to 12 alarms and six compatible devices for unified, cross-room alerts.
• Latching indicator helps you quickly identify the source of an alarm.
• Easy testing and silencing, with a simple single button to manage alerts.

• Gasketless base and secure mounting bracket support precise alignment and robust installation.
• UL 217 standard compliance and California State Fire Marshal listing indicate formal safety certification.
• 10-year limited warranty backs long term performance.
• Dust cover protects the unit during construction or renovations.

Placement guidance suggests sizing coverage across levels and sleeping zones. For best results, consider placing one detector on each level of your home and near bedrooms to balance early detection with clear audible alerts. The 9120BFF is designed to be a dependable component of a larger safety plan, offering features that can support everyday vigilance without guaranteeing outcomes.

In the box, you will find one smoke alarm, one 9-volt battery, and a user manual, ready to help you get up and running quickly.