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10 Best combination smoke carbon monoxide detectors of 2025

Save up to 37% off
  • Best Choice

    1

    X-Sense Smart Smoke Detector Carbon Monoxide Detector Combo, Battery-Operated (Not AC Hardwired) Interconnected Combination Smoke Carbon Monoxide Detector, 5 Detectors with 1 Base Station, SC07-MR51
    X-Sense

    X-Sense Smart Smoke Detector Carbon Monoxide Detector Combo, Battery-Operated (Not AC Hardwired) Interconnected Combination Smoke Carbon Monoxide Detector, 5 Detectors with 1 Base Station, SC07-MR51

    15% Off
    • batteries:5-year CR123A battery
    • power source:Battery Powered
    • alarm:Alarm
    • style:With Base Station
    • sensor:Photoelectric
    9.9
    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
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  • Value for Money

    2

    4 Pack Combination Smoke and Carbon Monoxide Detector Battery Operated, Travel Portable Photoelectric Fire&Co Alarm for Home, Kitchen
    Lecoolife

    4 Pack Combination Smoke and Carbon Monoxide Detector Battery Operated, Travel Portable Photoelectric Fire&Co Alarm for Home, Kitchen

    14% Off
    • batteries:No
    • power source:Battery Powered
    • alarm:Photoelectric sensor
    • style:Modern
    • sensor:Electrochemical CO sensor
    9.8
    Exceptional
    Our Rating

  • 3

    X-Sense 10-Year Battery Combination Smoke Carbon Monoxide Alarm Detector with Large LCD Display (Standalone Model)
    X-Sense

    X-Sense 10-Year Battery Combination Smoke Carbon Monoxide Alarm Detector with Large LCD Display (Standalone Model)

    25% Off
    9.7
    Exceptional

  • 4

    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

    9.4
    Excellent

  • 5

    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

    9.3
    Excellent
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  • 6

    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

    9.1
    Excellent

  • 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

    13% Off
    8.8
    Very Good

  • 8

    Kidde Smoke & Carbon Monoxide Detector, AA Battery Powered, LED Warning Light Indicators, 2 Pack
    Kidde

    Kidde Smoke & Carbon Monoxide Detector, AA Battery Powered, LED Warning Light Indicators, 2 Pack

    8.7
    Very Good

  • 9

    3 Pack Combination Photoelectric Smoke Alarm and Carbon Monoxide Detector Battery Operated with Digital Display (White)
    Linsoal

    3 Pack Combination Photoelectric Smoke Alarm and Carbon Monoxide Detector Battery Operated with Digital Display (White)

    37% Off
    8.5
    Good

  • 10

    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

    20% Off
    • power source:Battery Powered
    • alarm:Audible 85 dB
    • sensor:Electrochemical, Photoelectric
    • dimensions:4.09D x 1.53W x 4.09H
    • color:N/A
    8.4
    Good