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10 Best smoke and carbon monoxide detectors of 2026

Save up to 29% off
  • Best Choice

    1

    First Alert SMCO100 Battery-Operated Combination Smoke & Carbon Monoxide Alarm - 3 Pack
    Clicked 277 times in the last month
    First Alert

    First Alert SMCO100 Battery-Operated Combination Smoke & Carbon Monoxide Alarm - 3 Pack

    • batteries:2 AA batteries
    • power source:Battery Powered
    • alarm:Smoke, CO
    • style:Precision Detection
    • sensor:Photoelectric
    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
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  • Value for Money

    2

    Kidde Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup Smoke Alarm, Interconnectable, LED Warning Light Indicators, 2 Pack
    Kidde

    Kidde Hardwired Smoke & Carbon Monoxide Detector, AA Battery Backup Smoke Alarm, Interconnectable, LED Warning Light Indicators, 2 Pack

    9.5
    Excellent

  • 3

    3 Packs Smoke and Carbon Monoxide Detector Powered by Battery,Portable Smoke Detector Carbon Monoxide Detector Combo with Large LCD Display, Fire Alarm Smoke Detector for Home,Kitchen
    OLUNCLE

    3 Packs Smoke and Carbon Monoxide Detector Powered by Battery,Portable Smoke Detector Carbon Monoxide Detector Combo with Large LCD Display, Fire Alarm Smoke Detector for Home,Kitchen

    9.4
    Excellent
    Our Rating

  • 4

    Kidde Smoke & Carbon Monoxide Detector, 10-Year Battery Powered, LED Warning Light Indicators, 30CUD10
    Kidde

    Kidde Smoke & Carbon Monoxide Detector, 10-Year Battery Powered, LED Warning Light Indicators, 30CUD10

    15% Off
    9.2
    Excellent

  • 5

    Smoke Detector and Carbon Monoxide Detector Co2 Detector Battery Powered with Test/Reset Button 4 Pack
    Linsoal

    Smoke Detector and Carbon Monoxide Detector Co2 Detector Battery Powered with Test/Reset Button 4 Pack

    29% Off
    9.0
    Excellent
  • See Today’s Deals & Prices

  • 6

    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

    11% Off
    8.7
    Very Good

  • 7

    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
    8.4
    Good

  • 8

    2 Pack Smoke and Carbon Monoxide Detector,Smoke Detector Carbon Monoxide Detector Combo with Batteries,Fire Alarm Smoke Detector with Test Button and Digital Display
    LEMONTAIL

    2 Pack Smoke and Carbon Monoxide Detector,Smoke Detector Carbon Monoxide Detector Combo with Batteries,Fire Alarm Smoke Detector with Test Button and Digital Display

    • power source:Battery Powered
    • alarm:Audible 85 dB
    • sensor:Electrochemical, Photoelectric
    • dimensions:4.09D x 1.53W x 4.09H
    • color:N/A
    8.3
    Good

  • 9

    10-Year Battery Smoke and Carbon Monoxide Detector, 2-in-1 Smoke CO Alarm with Digital Display, Reliable Fire and CO Alarm for Home, Bedroom, Kitchen (1 Pack)
    KLTsenaife

    10-Year Battery Smoke and Carbon Monoxide Detector, 2-in-1 Smoke CO Alarm with Digital Display, Reliable Fire and CO Alarm for Home, Bedroom, Kitchen (1 Pack)

    8.2
    Good

  • 10

    6 Packs,2 in 1 Technology, Smoke,Carbon Monoxide Detector, Co Alarm,85db Alert,LCD Readout,3 Color LED Indication,(Green Light Blinking at Work), with 3 AA Batteries,Easy Install,for Home and Kitchen
    ARIKON

    6 Packs,2 in 1 Technology, Smoke,Carbon Monoxide Detector, Co Alarm,85db Alert,LCD Readout,3 Color LED Indication,(Green Light Blinking at Work), with 3 AA Batteries,Easy Install,for Home and Kitchen

    8.1
    Good