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10 Best first alert brk sc9120bs of 2026

Explore top picks
  • Best Choice

    1

    BRK SC9120B Smoke and Carbon Monoxide Alarm
    BRK
    9.8
    Exceptional

    BRK SC9120B Smoke and Carbon Monoxide Alarm

    • Interconnectivity:Inter-connectable with BRK and First Alert hardwired alarms
    • Mounting:Universal mount bracket
    • Power Requirement:9-volt battery
    • Sensor Type:Carbon Monoxide sensor and dual ionization smoke alarm
    • Warranty:7-year limited warranty
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  • Value for Money

    2

    FIRST ALERT BRK SC9120B Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup, 1 Pack, White
    First Alert
    9.6
    Exceptional

    FIRST ALERT BRK SC9120B Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup, 1 Pack, White

    • Function:2-in-1 smoke and carbon monoxide protection
    • Interconnectivity:Interconnectable with compatible First Alert and BRK alarms
    • Power Connection:Hardwired alarm
    • Sensor Type:Ionization
    • Warranty:10-year limited warranty

  • 3

    FIRST ALERT BRK SC9120B-3 Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup, White, Pack of 3
    First Alert
    9.5
    Excellent

    FIRST ALERT BRK SC9120B-3 Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup, White, Pack of 3

  • 4

    First Alert BRK SC9120B-6 Hardwired Smoke and Carbon Monoxide Detector (CO) with Battery Backup. 6-Pack , White
    First Alert
    9.3
    Excellent

    First Alert BRK SC9120B-6 Hardwired Smoke and Carbon Monoxide Detector (CO) with Battery Backup. 6-Pack , White

  • 5

    BRK SC9120B Hardwired Smoke and Carbon Monoxide Alarm with Battery Backup, Interconnectable, White, 2 Pack
    BRK
    9.2
    Excellent

    BRK SC9120B Hardwired Smoke and Carbon Monoxide Alarm with Battery Backup, Interconnectable, White, 2 Pack

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  • 6

    FIRST ALERT SC9120B Corded Electric Combination Alarm with Adapter Plugs for Easy Replacement
    First Alert
    9.0
    Excellent

    FIRST ALERT SC9120B Corded Electric Combination Alarm with Adapter Plugs for Easy Replacement

  • 7

    First Alert BRK SC-9120B xrHsEW Hardwired Smoke and Carbon Monoxide Alarm with Battery Backup, 4 Units
    First Alert
    8.8
    Very Good

    First Alert BRK SC-9120B xrHsEW Hardwired Smoke and Carbon Monoxide Alarm with Battery Backup, 4 Units

  • 8

    First Alert BRK SC9120B-12 Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup, 12-Pack
    First Alert
    8.7
    Very Good

    First Alert BRK SC9120B-12 Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup, 12-Pack

  • 9

    BRK First Alert 9120BFF/ SMI100-AC Smoke Detector, Hardwired Alarm with Battery Backup, White, 1-Pack
    BRK
    8.4
    Good

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

  • 10

    First Alert BRK SC-9120B yaObkn Hardwired Smoke and Carbon Monoxide Alarm with Battery Backup, 5 Units
    First Alert
    8.2
    Good

    First Alert BRK SC-9120B yaObkn Hardwired Smoke and Carbon Monoxide Alarm with Battery Backup, 5 Units