BRK SMI105-AC BRK Hardwire Smoke Alarm with 10-Year Battery Backup (12-pack)

BRK SMI105-AC Hardwired Smoke Alarm with 10-Year Battery Backup (12-Pack) – Ionization Sensor, SC5 Compatible

Upgrade your fire safety system with the BRK SMI105-AC Hardwired Smoke Alarm (12-Pack)—engineered for long-term reliability, advanced detection, and minimal maintenance. Designed with a 10-year sealed lithium battery backup, this unit provides continuous protection without the need for battery replacements, even during power outages.

Built for modern installations, this alarm integrates seamlessly with SC5 Smart Alarm systems and is compatible with most First Alert and BRK hardwired alarms. With interconnect capability, when one alarm is triggered, all connected units sound—ensuring full-property coverage and faster response times.

The advanced ionization sensing technology delivers quick detection of fast-flaming fires while minimizing nuisance alarms from everyday cooking. The latching alarm indicator allows you to quickly identify which unit initiated the alarm or has a low battery, making troubleshooting simple and efficient.

• 10-Year sealed lithium battery backup – no replacements required
• Hardwired with interconnect capability – connects up to 12 smoke alarms + 6 additional devices
• Compatible with SC5 Smart Alarm systems
• Works with most First Alert & BRK alarms
• Ionization sensor for fast-flaming fire detection
• 85 dB alarm at 10 feet for clear alerts
• Latching alarm indicator for easy identification
• Test/Silence button for quick control
• End-of-life warning for timely replacement
• Quick connect adapter plug included for easy installation
• Dust cover included – ideal for construction environments
• 12-pack configuration – perfect for multi-unit or full-property installations

• Model: SMI105-AC
• SKU: 1046849
• Type: Hardwired Smoke Alarm
• Sensor: Ionization
• Sound Output: 85 dB at 10 ft
• Power Source: Hardwired with sealed 10-year lithium battery backup
• Interconnect: Yes
• Battery Replaceable: No
• Dimensions: 5.69" L x 5.69" W x 2.25" H
• Weight: 0.61 lb (each unit)
• Color: White
• UPC: 029054022516
• Warranty: 10-Year Limited
• Replaces Model: 9120LBL

• UL 217 8th Edition Listed
• Meets current residential safety and building code requirements