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10 Best first alert smoke detectors of 2025

Save up to 31% off
  • Best Choice

    1

    First Alert SM110LED-AC, Hardwire Smoke Alarm with LED Strobe & 10-Year Battery Backup, 1-Pack
    First Alert

    First Alert SM110LED-AC, Hardwire Smoke Alarm with LED Strobe & 10-Year Battery Backup, 1-Pack

    9.8
    Exceptional
  • Powerful technology We scan thousands of products and stores, analyzing reviews to find what matters most to users like you
    Careful review Our team ensures quality, value, and fit based on real user feedback
    Trusted insights AI and human analysis guide your decisions, reflecting real user priorities
    Real users impact
    • Thousands of users trust our site daily
    • Based on millions of stores and reviews
    • Shoppers influence our rankings
  • Value for Money

    2

    First Alert BRK 9120Bff-6 Hardwired Smoke Detector with Battery Backup, 6-Pack
    First Alert

    First Alert BRK 9120Bff-6 Hardwired Smoke Detector with Battery Backup, 6-Pack

    9.7
    Exceptional

  • 3

    First Alert Smoke Alarm, Battery-Operated Detector with Test & Silence Button, SMI100, 1-Pack
    First Alert

    First Alert Smoke Alarm, Battery-Operated Detector with Test & Silence Button, SMI100, 1-Pack

    15% Off
    9.4
    Excellent

  • 4

    BRK First Alert 9120BFF/ SMI100-AC Smoke Detector, Hardwired Alarm with Battery Backup, White, 1-Pack
    First Alert

    BRK First Alert 9120BFF/ SMI100-AC Smoke Detector, Hardwired Alarm with Battery Backup, White, 1-Pack

    9.1
    Excellent
    Our Rating

  • 5

    First Alert SM210, 10-Year Sealed Battery Smoke Alarm with Slim Profile Design, 1-Pack
    First Alert

    First Alert SM210, 10-Year Sealed Battery Smoke Alarm with Slim Profile Design, 1-Pack

    14% Off
    • color:White
    • batteries:1 Product Specific
    • power source:Battery Powered
    • alarm:Smoke Alarm
    • style:Precision Detection
    9.0
    Excellent
  • See Today’s Deals & Prices

  • 6

    First Alert 9120B Smoke Detector, Hardwired Alarm with Battery Backup, 6-Pack
    First Alert

    First Alert 9120B Smoke Detector, Hardwired Alarm with Battery Backup, 6-Pack

    • color:White
    • batteries:1 9V batteries required
    • power source:Battery Powered
    • alarm:Audible
    • style:9120B
    8.8
    Very Good
    Our Rating

  • 7

    First Alert Smoke Alarm, Interconnect Hardwire Detector with Battery Backup, SMI100-AC, 3-Pack
    First Alert

    First Alert Smoke Alarm, Interconnect Hardwire Detector with Battery Backup, SMI100-AC, 3-Pack

    31% Off
    8.6
    Very Good

  • 8

    First Alert Smoke Alarm, Interconnect Hardwire Detector with 10-Year Battery Backup, SMI105-AC, 3-Pack
    First Alert

    First Alert Smoke Alarm, Interconnect Hardwire Detector with 10-Year Battery Backup, SMI105-AC, 3-Pack

    26% Off
    8.4
    Good

  • 9

    First Alert Smoke Alarm, 10-Year Sealed Battery Detector with Test & Silence Button, SMI110, 1-Pack
    First Alert

    First Alert Smoke Alarm, 10-Year Sealed Battery Detector with Test & Silence Button, SMI110, 1-Pack

    • color:White
    • batteries:1 Product Specific included
    • power source:Battery Powered
    • alarm:Smoke
    • style:Precision Detection
    8.3
    Good

  • 10

    First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector with Battery Backup, SMICO100-AC, 1-Pack
    First Alert

    First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector with Battery Backup, SMICO100-AC, 1-Pack

    21% Off
    8.0
    Good