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First Alert Carbon Monoxide Alarms

Carbon Monoxide alarms are capable of detecting carbon monoxide at low levels, so you can be alerted to a leak before it becomes dangerous. The best carbon monoxide alarms are easy to install and have a long battery life. Browse the top-ranked list of First Alert Carbon Monoxide alarms below along with associated reviews and opinions.

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  1. First Alert - Standard Battery-Operated Smoke and CO Alarm 2 Pack Models SMI100 and CO400 - White

    SKU: J7XK72GYWV

    Product Description

    A battery-operated white alarm set offering advanced smoke and carbon monoxide detection with easy installation.
    See all Smoke & Carbon Monoxide Detectors
    Your price for this item is $47.99

  2. First Alert - Smoke and Carbon Monoxide Detector Hardwired - White

    SKU: JJ8Z8VQ4FT

    Love that my phone will give me a notification that my smoke alarm sounded...Love it! The best one I ever got!!! I will keep getting this one...Great product

    Product Description

    A hardwired, app-compatible white detector that alerts you to both smoke and carbon monoxide dangers.
    See all Smoke & Carbon Monoxide Detectors
    Your price for this item is $129.99

  3. First Alert - CO615 Carbon Monoxide Plug-In Alarm with Battery Backup CO615 - White

    SKU: J7XK72GX6Q

    Product Description

    A white plug-in carbon monoxide alarm with battery backup for continuous home safety and easy relocation.
    See all Smoke & Carbon Monoxide Detectors
    Your price for this item is $49.99

  4. First Alert - Z-Wave Smoke and Carbon Monoxide Detector - White

    SKU: JJ8Z8VQ43T

    Great safety device/linked to Ring System....Love that it links into your Ring security system so easily so you can track any issues in advance....This is great alarm for smoke and CO.

    Product Description

    A battery-powered white alarm that detects both smoke and carbon monoxide, compatible with Z-Wave smart systems.
    See all Smoke & Carbon Monoxide Detectors
    Your price for this item is $64.99

  5. First Alert - 10 Year Battery-Powered Photoelectric Smoke and Carbon Monoxide Detector 1 each

    SKU: J7XK72GSTS

    Product Description

    A battery-powered alarm with voice alerts that detects both smoke and carbon monoxide for home safety.
    See all Smoke & Carbon Monoxide Detectors
    Your price for this item is $68.25

  6. First Alert - SMCO210 Sealed 10-Year-Battery 2-in-1 Smoke and CO Alarm Slim Profile - White

    SKU: J7XK72GPGF

    Product Description

    A slim white alarm with advanced sensors offers 10-year battery protection against smoke and carbon monoxide.
    See all Smoke & Carbon Monoxide Detectors
    Your price for this item is $58.99

  7. First Alert - Plug-In w/Battery Back-up Electrochemical Carbon Monoxide Detector

    SKU: J7XK72GG4S

    Product Description

    A plug-in carbon monoxide detector with 9V battery backup and electrochemical sensor for reliable home safety.
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    Your price for this item is $70.18

  8. First Alert - Battery-Powered Photoelectric Smoke and Carbon Monoxide Combination Pack 2 each

    SKU: J7XK72GYVX

    Product Description

    A battery-powered alarm pack offering advanced smoke and carbon monoxide detection with reduced nuisance alerts.
    See all Smoke & Carbon Monoxide Detectors
    Your price for this item is $59.02

  9. First Alert - Plug-in Electrochemical Explosive Gas and Carbon Monoxide Detector

    SKU: J7XK72GXHQ

    Product Description

    A plug-in alarm that detects carbon monoxide, propane, and natural gas with digital display and battery backup.
    See all Smoke & Carbon Monoxide Detectors
    Your price for this item is $74.47
    Save $2
    The previous price was $77.22

  10. First Alert - SMCO100 Battery-Operated 2-in-1 Smoke and CO Alarm - White

    SKU: J7XK72GPGH

    Product Description

    A battery-operated white alarm that detects both smoke and carbon monoxide with easy installation and testing.
    See all Smoke & Carbon Monoxide Detectors
    Your price for this item is $47.99
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FAQ

First Alert Carbon Monoxide Alarms are designed for easy installation. Most models can be mounted on a wall or placed on a tabletop. Simply follow the included step-by-step instructions and use the provided mounting hardware or adhesive strips, if applicable.

Many First Alert Carbon Monoxide Alarms are battery-operated, while others plug into a standard electrical outlet. Some models feature a sealed lithium battery that lasts for the life of the alarm, eliminating the need for battery changes.

Select First Alert Carbon Monoxide Alarms can be interconnected with compatible First Alert smoke and carbon monoxide alarms. This means when one alarm sounds, all connected alarms will alert you. Check the product details to see if interconnectivity is supported.

It is recommended to test your First Alert Carbon Monoxide Alarm at least once a month by pressing the test button. Regular testing ensures that the alarm is functioning properly.

Some First Alert Carbon Monoxide Alarms feature a digital display that shows real-time carbon monoxide levels. Be sure to review the product specifications to find a model with this feature if you prefer visual monitoring.