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10 Best carbon monoxide detectors of 2026

Save up to 14% off
  • Best Choice

    1

    X-Sense Smoke Detector and Carbon Monoxide Detector, SC01, 1-Pack | 10-Year Sealed Battery (Not Hardwired), Real-Time CO and Battery LCD Display, UL 217 & UL 2034 Certified
    X-Sense
    9.8
    Exceptional

    X-Sense Smoke Detector and Carbon Monoxide Detector, SC01, 1-Pack | 10-Year Sealed Battery (Not Hardwired), Real-Time CO and Battery LCD Display, UL 217 & UL 2034 Certified

    14% Off
    • asin:B0B48XDLTT
    • batteries:2 Lithium Metal batteries required. included
    • best sellers rank: 10 in Smoke & Carbon Monoxide Alarms
    • date first available:April 18, 2023
    • item model number:SC01
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  • Value for Money

    2

    X-Sense Smoke Detector Carbon Monoxide Detector Combo, SC07, 1-Pack | 10-Year Sealed Battery (Not Hardwired), 2-in-1 Smoke & CO Detection, LCD Display, UL 217 & UL 2034 Certified
    X-Sense
    9.6
    Exceptional

    X-Sense Smoke Detector Carbon Monoxide Detector Combo, SC07, 1-Pack | 10-Year Sealed Battery (Not Hardwired), 2-in-1 Smoke & CO Detection, LCD Display, UL 217 & UL 2034 Certified

    14% Off Limited Time Deal

  • 3

    5-in-1 CO₂ Detector Plug in Wall, Air Quality Monitor (Temp, Humidity &CO₂) | Air Quality Monitor with High Accuracy CO2 Meter, Color HD Display Sound Alarm & 140-day historical data log for Office/Home
    BEVIU
    9.3
    Excellent

    5-in-1 CO₂ Detector Plug in Wall, Air Quality Monitor (Temp, Humidity &CO₂) | Air Quality Monitor with High Accuracy CO2 Meter, Color HD Display Sound Alarm & 140-day historical data log for Office/Home

    • Data Logging:140-day historical data log
    • Display Type:Color HD Display
    • Functionality:3-in-1 CO₂ Detector
    • Monitoring Capabilities:Temperature, Humidity & CO₂
    • Power Source:Plug in Wall

  • 4

    First Alert Battery Carbon Monoxide Alarm | CO400
    First Alert
    9.1
    Excellent

    First Alert Battery Carbon Monoxide Alarm | CO400

  • 5

    Kidde Carbon Monoxide Detector, AA Battery Powered CO Alarm with LEDs, Test-Reset Button, Low Battery Indicator, Portable
    Kidde
    9.0
    Excellent

    Kidde Carbon Monoxide Detector, AA Battery Powered CO Alarm with LEDs, Test-Reset Button, Low Battery Indicator, Portable

    • Alarm Decibel Level:85-decibel
    • Power Source:AA Battery Powered
    • Sensor Technology:Electrochemical sensor technology
    • Warranty Period:10-Year limited manufacturer warranty on the alarm only
    • Weight:0.6 pounds
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  • 6

    Kidde Carbon Monoxide Detector, Plug-in & AA Battery Backup, COP | Rotating Plug with Power Surge Immunity, LED Status Lights, Loud 85 Db Alarm, Ideal for Homes & Apartments, 5th Edition
    Kidde
    8.7
    Very Good

    Kidde Carbon Monoxide Detector, Plug-in & AA Battery Backup, COP | Rotating Plug with Power Surge Immunity, LED Status Lights, Loud 85 Db Alarm, Ideal for Homes & Apartments, 5th Edition

  • 7

    First Alert Plug in Carbon Monoxide Alarm | CO606, 9V Battery Backup
    First Alert
    8.5
    Good

    First Alert Plug in Carbon Monoxide Alarm | CO606, 9V Battery Backup

  • 8

    Kidde Carbon Monoxide Detector, AA Battery-Powered, COB | LED Status Lights, Loud 85 db Alarm, Lightweight and Portable for Travel or Home, 5th Edition
    Kidde
    8.3
    Good

    Kidde Carbon Monoxide Detector, AA Battery-Powered, COB | LED Status Lights, Loud 85 db Alarm, Lightweight and Portable for Travel or Home, 5th Edition

  • 9

    Kidde Carbon Monoxide Detector, Plug-in & AA Battery Backup, COPD | No Low Battery Chirps, Rotating Plug with Power Surge Immunity, LED Status Lights, Ideal for Homes & Apartments, 5th Edition
    Kidde
    8.2
    Good

    Kidde Carbon Monoxide Detector, Plug-in & AA Battery Backup, COPD | No Low Battery Chirps, Rotating Plug with Power Surge Immunity, LED Status Lights, Ideal for Homes & Apartments, 5th Edition

  • 10

    Kidde Carbon Monoxide Detector, Plug-in Carbon Monoxide Detector with AA Battery Backup, 85 dB Alarm, LED Status Light Indicators, 3rd Edition
    Kidde
    7.9
    Good

    Kidde Carbon Monoxide Detector, Plug-in Carbon Monoxide Detector with AA Battery Backup, 85 dB Alarm, LED Status Light Indicators, 3rd Edition