BRK SMI105-AC Smoke Alarm
Best reliable safety upgrade for modern homeowners seeking easy installation.
This hardwired detector eliminates the annual chore of battery swaps with its decade-long sealed power source. While it relies on ionization technology—which can be sensitive to kitchen steam—the interconnectable design and latching indicator make it an essential, low-maintenance upgrade for comprehensive home safety.
$27.64
at
Mars Electric
Who it's for
- Homeowners seeking reliable protection against fast-burning household fires
- Families in multi-story homes requiring synchronized alerts across all rooms
- Safety-conscious residents living in areas prone to frequent electrical storms
Who should skip it
- Home cooks with kitchens located near hallway alarm installations
- Busy individuals who prefer low-maintenance safety hardware
- Property owners wanting comprehensive coverage against slow-burning upholstery fires
Performance breakdown
Maintenance Convenience
The ten-year sealed battery eliminates the hassle of annual replacements.
System Integration
Hardwired interconnectivity ensures every alarm sounds simultaneously for maximum household safety.
Nuisance Alarm Control
Ionization sensors are effective but prone to occasional kitchen-related false triggers.
Installation Complexity
Requires hardwiring, which is best handled by someone comfortable with electrical.
Emergency Awareness
Latching indicators clearly identify which specific unit initiated the alarm sequence.
Regulatory Compliance
Meets the latest UL 217 8th Edition safety standards for residential protection.
Key Specs
Detection Technology
Ionization
Power Source
Hardwired with 120V AC and 9V Lithium Battery Backup
Connectivity Type
Hardwired Interconnected
Interconnectivity Type
Hardwired Interconnect
Battery Type
Lithium (Sealed)
Battery Life
10 years
Alarm Type
Siren
Alert Type
Siren / Beep
Certification
UL 217 8th Edition
Dimensions
57.15 mm H x 144.5 mm Diameter
Know before you buy
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Ask Metto anything about the BRK SMI105-AC Smoke Alarm before you decide.
