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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 - CO615 Carbon Monoxide Plug-In Alarm with Battery Backup CO615 - White

    SKU: J7XK72GX6Q

    Small and works great for a detector in my kitchen

    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
  2. First Alert - CO3-B01D-T Battery-Operated Carbon Monoxide Alarm, Digital Display - White

    SKU: JJ8Z8VHJLY

    Product Description

    A white battery-operated carbon monoxide alarm with digital current and peak readings and replaceable AA batteries.
    See all Smoke & Carbon Monoxide Detectors
    Your price for this item is $54.99
  3. First Alert - Carbon Monoxide Alarm

    SKU: J7XK72GXYY

    Product Description

    A battery-powered white alarm that detects carbon monoxide and alerts with a loud 85dB siren.
    See all Smoke & Carbon Monoxide Detectors
    Your price for this item is $50.99
  4. First Alert - CO3-B01-T Battery-Operated Carbon Monoxide Alarm - White

    SKU: JJ8Z8VHJGP

    Product Description

    A white battery-operated carbon monoxide alarm with an 85-dB alert, test/silence button, and end-of-life timer.
    See all Smoke & Carbon Monoxide Detectors
    Your price for this item is $31.99
  5. First Alert - Plug-In Explosive Gas and Carbon Monoxide Alarm - White & Gray

    SKU: J7XK7287P3

    Product Description

    A plug-in white and gray alarm that detects explosive gases and carbon monoxide, with battery backup.
    See all Smoke & Carbon Monoxide Detectors
    Your price for this item is $59.99
  6. 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.
    See all Smoke & Carbon Monoxide Detectors
    Your price for this item is $64.62
    Save $5
    The previous price was $70.18
  7. First Alert - SMCO210V Sealed 10-Year-Battery 2-in-1 Smoke and Carbon Monoxide Alarm with Voice Alerts - White

    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
  8. First Alert - SMCO200V Battery-Operated 2-in-1 Smoke and CO Alarm, Voice and Location Alerts - White

    SKU: J7XK72GPRJ

    Product Description

    A battery-operated white alarm with voice and location alerts for both smoke and carbon monoxide detection.
    See all Smoke & Carbon Monoxide Detectors
    Your price for this item is $51.99
  9. 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

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.