Menu
Search
Advertising Disclosure

10 Best first alert dual sensors of 2025

Save up to 46% off
  • Best Choice

    1

    First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector with Battery Backup and Voice & Location Alerts, SMCO100V-AC, 1-Pack
    First Alert

    First Alert Combination Smoke & Carbon Monoxide Alarm, Interconnect Hardwire Detector with Battery Backup and Voice & Location Alerts, SMCO100V-AC, 1-Pack

    • color:White
    • batteries:Yes
    • power source:Corded Electric
    • alarm:Smoke and CO Alarm
    • style:Precision Detection
    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 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

    9.5
    Excellent

  • 3

    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

    46% Off
    9.2
    Excellent
    Our Rating

  • 4

    First Alert SMCO210, 10-Year Sealed Battery Combination Smoke & Carbon Monoxide Alarm with Slim Profile Design, 1-Pack
    First Alert

    First Alert SMCO210, 10-Year Sealed Battery Combination Smoke & Carbon Monoxide Alarm with Slim Profile Design, 1-Pack

    9.0
    Excellent

  • 5

    First Alert Combination Smoke & Carbon Monoxide Alarm, Battery Operated Detector with Test & Silence Button, SMICO100, 1-Pack
    First Alert

    First Alert Combination Smoke & Carbon Monoxide Alarm, Battery Operated Detector with Test & Silence Button, SMICO100, 1-Pack

    8.7
    Very Good
  • See Today’s Deals & Prices

  • 6

    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

    13% Off
    8.4
    Good

  • 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

    37% Off
    8.2
    Good

  • 8

    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

    • power source:Battery Powered
    • alarm:Smoke and CO Alarm
    • style:Precision Detection
    • sensor:Photoelectric
    • dimensions:5D x 5W x 2H
    8.0
    Good

  • 9

    First Alert Combination Smoke & Carbon Monoxide Alarm, Battery Operated Detector with Test & Silence Button, SMCO100, 1-Pack,White
    First Alert

    First Alert Combination Smoke & Carbon Monoxide Alarm, Battery Operated Detector with Test & Silence Button, SMCO100, 1-Pack,White

    7.9
    Good

  • 10

    First Alert CO710 Carbon Monoxide Detector with 10-Year Battery and Digital Temperature Display , White
    First Alert

    First Alert CO710 Carbon Monoxide Detector with 10-Year Battery and Digital Temperature Display , White

    • power source:10-year lithium battery
    • alarm:85-decibel alarm
    • sensor:Carbon monoxide sensor
    • battery:10-year lithium battery
    • color:N/A
    7.8
    Good
    Our Rating