Interconnect hardwire smoke alarm with 10-year battery backup

First Alert ★ 4.0/5 · ItemOracle Score Mid-Range

$40 USD
Price subject to change
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First Alert SMI105-AC, Interconnect Hardwire Smoke Alarm with 10-Year Battery Backup, 1-Pack

Smoke alarm with interconnect capability and 10-year battery backup for continuous protection during outages. Provides early warning and features a unit-specific alarm indicator. Users note easy installation and value, with mixed feedback on false alarms and battery lifespan

Highlights

  • 10-year battery backup
  • interconnect across alarms
  • advanced sensing tech

Pros

  • interconnect capability
  • 10-year battery backup
  • easy installation
  • clear alarm indication
  • advanced sensing technology

Cons

  • mixed feedback on false alarms
  • battery lifespan varies by unit

Best For

  • single-family home installation
  • basement or hallway smoke detection
  • replacement for older units
  • interconnected safety system setup
  • new construction wiring with standard detectors
  • hardwire with backup for power outages

Features

  • First Alerts Precision Detection advanced sensing technology complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency.
  • 10-Year battery backup provides continuous protection during power outages
  • Through early warning interconnect
  • when one alarm sounds
  • all compatible
  • Alarm indicator visually identifies the unit that initiated the alarm
  • End-of-life warning lets you know when its time to replace the alarm.

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