First Alert BRK SMI100-AC 6-Pack Hardwired Smoke Detectors with Battery Backup

Overview

The BRK SMI100-AC redefines home safety with faster, easier installation and smarter sensing. This 6-pack of hardwired smoke detectors includes a 9-volt battery backup, delivering peace of mind during power interruptions while maintaining dependable interconnectivity across your home.

Key Benefits

• 6-pack hardwired alarms with battery backup to keep protection active during outages
• 120-Volt AC power with a 9-volt backup battery and a gasketless base for quick mounting
• Interconnect capable up to 18 units (12 smoke alarms, 6 companion devices such as bells or relays)
• Open mounting design and side-load battery compartment for fast, flexible installation
• 10-Year limited warranty provides long-term assurance
• Tamper-resistant locking pins and a single test/silence control for convenient maintenance

In real-world use, these detectors leverage an ionization sensor to help identify fast flaming fires, while smart technology reduces nuisance alarms. The open mounting system simplifies alignment during installation, and the side-load battery compartment makes battery changes smoother on busy job sites. The ability to interconnect up to 18 units means a single alarm can coordinate a broader safety net across multiple rooms or floors, potentially helping households respond more quickly when an alert sounds.

Real-Life Scenarios

• For multi-room homes, the interconnected design can help ensure every room is alerted if one unit detects danger.
• During renovations or construction, a dust cover helps keep the unit clean until final installation is complete.
• In power outages, the built-in 9-volt battery backup keeps the system functioning without immediate replacement concerns.
• The latching alarm indicator and power indicators help identify which unit triggered the alarm for faster response.

While this set is designed to be reliable and easy to manage, results may vary based on home layout, electrical wiring, and installation quality. The product emphasizes safety-minded functionality—without promising guaranteed outcomes—so you can assess how it best fits your home safety plan.