Menu
Search
Advertising Disclosure

10 Best first alert dual sensors of 2026

Save up to 30% off

  • 1

    First Alert Interconnect Hardwire Dual Sensor Smoke Alarm with Battery Backup, SM300-AC, 6-Pack
    First Alert

    First Alert Interconnect Hardwire Dual Sensor Smoke Alarm with Battery Backup, SM300-AC, 6-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

  • 2

    First Alert Interconnect Hardwire Dual Sensor Smoke Alarm with Battery Backup, SM300-AC, 3-Pack
    First Alert

    First Alert Interconnect Hardwire Dual Sensor Smoke Alarm with Battery Backup, SM300-AC, 3-Pack

    9.7
    Exceptional

  • 3

    First Alert Smoke Alarm, 10-Year Sealed Battery Dual Sensor Detector with Test & Silence Button, SM310, 1-Pack
    First Alert

    First Alert Smoke Alarm, 10-Year Sealed Battery Dual Sensor Detector with Test & Silence Button, SM310, 1-Pack

    9.4
    Excellent

  • 4

    First Alert SM300-AC, Interconnect Hardwire Dual Sensor Smoke Alarm with Battery Backup, 1-Pack
    First Alert

    First Alert SM300-AC, Interconnect Hardwire Dual Sensor Smoke Alarm with Battery Backup, 1-Pack

    9.3
    Excellent

  • 5

    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

    16% Off
    9.0
    Excellent
  • See Today’s Deals & Prices

  • 6

    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
    8.7
    Very Good

  • 7

    First Alert CO615 Dual-Power Plug-In Carbon Monoxide Detector with Battery Backup and Digital Display, White
    First Alert

    First Alert CO615 Dual-Power Plug-In Carbon Monoxide Detector with Battery Backup and Digital Display, White

    8.4
    Good
    Our Rating

  • 8

    First Alert SMI100, Battery-Operated Smoke Alarm, 3-Pack
    First Alert

    First Alert SMI100, Battery-Operated Smoke Alarm, 3-Pack

    • color:White
    • batteries:1 9V included
    • power source:Battery Powered
    • alarm:Smoke Detector
    • sensor:Ionization
    8.3
    Good

  • 9

    First Alert SMCO500V, Interconnect Battery-Operated Combination Smoke & Carbon Monoxide Alarm with Voice Alerts, 1-Pack
    First Alert

    First Alert SMCO500V, Interconnect Battery-Operated Combination Smoke & Carbon Monoxide Alarm with Voice Alerts, 1-Pack

    13% Off
    • power source:Battery Powered
    • alarm:Smoke and CO Alarm
    • sensor:Photoelectric
    • style:Precision Detection
    • dimensions:5D x 5W x 2H
    8.1
    Good

  • 10

    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

    30% Off
    7.9
    Good