BRK SMI105-AC Smoke Alarm
BRK

BRK SMI105-AC Smoke Alarm

4.5

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

In stock

at

Mars Electric

Detection Technology Ionization
Ionization
Photoelectric
Power Source Hardwired with Battery Backup
Battery Operated
Hardwired with Battery Backup
Connectivity Type Hardwired Interconnected
Hardwired Interconnected
Standalone
Interconnectivity Type Hardwired Interconnect
Hardwired Interconnect
None

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.

Excellent

System Integration

Hardwired interconnectivity ensures every alarm sounds simultaneously for maximum household safety.

Excellent

Nuisance Alarm Control

Ionization sensors are effective but prone to occasional kitchen-related false triggers.

Good

Installation Complexity

Requires hardwiring, which is best handled by someone comfortable with electrical.

Good

Emergency Awareness

Latching indicators clearly identify which specific unit initiated the alarm sequence.

Excellent

Regulatory Compliance

Meets the latest UL 217 8th Edition safety standards for residential protection.

Excellent

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

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BRK SMI105-AC Smoke Alarm

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Mars Electric
Mars Electric
In stock
$27.64
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