Protect your home and family with the BRK SMICO105-AC Interconnect Hardwired Smoke and Carbon Monoxide Alarm with a 10-Year Sealed Lithium Battery Backup. This advanced combo alarm offers dual sensor technology—ionization for fast-flaming fires and electrochemical for carbon monoxide detection—providing fast, accurate warnings when seconds matter most.
Designed to replace model SC9120LBL, this combination unit features a factory-locked battery that lasts for 10 years, eliminating the hassle of battery changes and ensuring uninterrupted protection during power outages.
With Smart Interconnect technology, this unit can be linked with up to 18 compatible BRK or First Alert alarms (12 smoke, 6 CO/heat), so when one alarm sounds, all interconnected units are triggered—ensuring whole-home awareness.
A latching alarm indicator visually identifies the initiating unit, while the Test/Silence button makes operation and maintenance simple. Additional features include a dust cover for clean installation, end-of-life warning, and quick-connect plug for easy hardwired setup.
10-Year Sealed Lithium Battery Backup – No battery changes required for a decade
Hardwired Power Source – Includes adapter plug for easy installation
Dual Sensor Technology – Ionization (smoke) + Electrochemical (CO) for comprehensive detection
Smart Interconnect – Link up to 18 compatible BRK/First Alert alarms
Latching Indicator – Visual cue shows which unit triggered the alarm
85 dB Alarm – Loud alert to warn occupants
Test/Silence Button – Convenient one-touch operation
UL 217 8th Edition Compliant – Meets latest safety standards
Model: SMICO105-AC (Replaces SC9120LBL)
Sensor Type: Ionization (smoke), Electrochemical (CO)
Power Source: Hardwired with 10-Year Battery Backup
Battery Type: Factory-Locked Lithium, Non-Replaceable
Sound Output: 85dB @ 10 feet
Dimensions: 5.69" W x 5.69" L x 2.25" H
Weight: 0.66 lb
Warranty: 10-Year Limited
Certifications: UL 217 8th Edition Compliant
Perfect for new installs or replacements, the BRK SMICO105-AC offers long-lasting, intelligent protection for any home or property.