First Alert CO400CN2 Battery Powered Carbon Monoxide Alarm, 2-Pack

3.5 stars
10 reviews ratings
Walmart #: 551512245

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  • Sensor lasts up to 5 years
  • Powered by 2 AA batteries
  • Features a loud 85-decibel horn
  • Gifting note: This item ships in the manufacturer's original packaging. If intended as a gift, the packaging may reveal the contents.

    About this item

    Protect yourself and your family from the threat of this toxic, odorless gas with the CO400 First Alert Battery Powered Carbon Monoxide Alarm. It features a permanently installed electrochemical carbon monoxide sensor with the most accurate technology and 85 decibel alarm horn. This carbon monoxide smoke alarm also features a mute button to quiet the alert horn temporarily. The First Alert smoke alarm measures the level of the carbon monoxide in the air and will activate the alarm immediately, if the level rises or is consistently present. This First Alert carbon monoxide alarm comes in a 2-pack and is powered by two AA replaceable alkaline batteries. It includes a test/silence button to test its functionality while silencing the alarm. The modern and compact design allows you to place it anywhere you need it. The CO400 First Alert Battery Powered Carbon Monoxide Alarm alerts you to replace the batteries with an audible and visual signal.

    First Alert CO400CN2 Battery Powered Carbon Monoxide Alarm, 2-Pack:

    • Uses an electrochemical carbon monoxide sensor
    • Permanent sensor on this carbon monoxide smoke alarm lasts up to 5 years
    • Powered by 2 AA replaceable alkaline batteries
    • Test/silence button both silences the alarm and allows you to test its functionality
    • First Alert carbon monoxide alarm in a 2-pack, monitors and re-alarms if carbon monoxide levels persist
    • Features a loud 85-decibel horn
    • CO400 First Alert Battery Powered Carbon Monoxide Alarm requires no installation
    • Attractive design allows the unit to be place
    • Includes an optional wall mount with no outlet required
    • Audible and visual low battery signal alerts you to replace the battery
    • Pull down action chart has convenient guide on what to do if an alarm sounds
    • UL listed
    • 5-year limited warranty


    Battery Type: Does Not Contain a Battery
    Multi Pack Indicator: No
    Model No.: CO400
    Shipping Weight (in pounds): 0.95
    Product in Inches (L x W x H): 10.0 x 6.63 x 2.0
    Assembled in Country of Origin: Imported
    Origin of Components: Imported
    Walmart No.: 551512245

    Customer reviews

    Customer Reviews | 10 reviews | 3.4 out of 5

    3.5 stars

    10 reviews | 3.4 out of 5

    5 stars
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    Would recommend to a friend



    Great deal!

    Customer review by CoastalSue

    5.0 stars by CoastalSue

    Two of these come, with batteries and mounting hardware, for the price of just one sensor at the local hardware store. We have a two-story home so we definitely wanted two of these. The CO sensors are now required by law in California, but it's just a good idea to have them, anyway, especially since both our gas heater and gas water heater are located inside the home.

    Was this review helpful? (11) (1)
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    Would recommend to a friend? Yes
    Ownership:2 - 7 weeks
    Age:45 - 54

    Customer review by JJ4137

    5.0 stars by JJ4137

    I hope to never need this detector but is is highly rated & it is easy to place within the home.

    Was this review helpful? (1) (0)
    Thank you! You have successfully submitted feedback for this review.
    Would recommend to a friend? Yes
    Ownership:2 - 7 weeks
    Age:45 - 54
    Usage:Every day

    Customer review by amb777

    5.0 stars by amb777

    Works like they are supposed to!

    Was this review helpful? (0) (1)
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    Would recommend to a friend? Yes
    1-3 of 8 total reviews See all

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    Warranty Plan

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    Product warranty: 5 Years See details

    Supplier Warranty: BRK Brands, Inc., ("BRK") the maker of First Alert brand products warrants that for a period of five years from the date of purchase, this product will be free from defects in material and workmanship. BRK, at its option, will repair or replace this product or any component of the product found to be defective during the warranty period. Replacement will be made with a new or remanufactured product or component. If the product is no longer available, replacement may be made with a similar product of equal or greater value. This is your exclusive warranty. This warranty is valid for the original retail purchaser from the date of initial retail purchase and is not transferable. Keep the original sales receipt. Proof of purchase is required to obtain warranty performance. BRK dealers, service centers, or retail stores selling BRK products do not have the right to alter, modify or any way change the terms and conditions of this warranty. This warranty does not cover normal wear of parts or damage resulting from any of the following: negligent use or misuse of the product, use on improper voltage or current, use contrary to the operating instructions, disassembly, repair or alteration by anyone other than BRK or an authorized service center. Further, the warranty does not cover Acts of God, such as fire, flood, hurricanes and tornadoes or any batteries that are included with this unit. BRK shall not be liable for any incidental or consequential damages caused by the breach of any express or implied warranty. Except to the extent prohibited by applicable law, any implied warranty of merchantability or fitness for a particular purpose is limited in duration to the duration of the above warranty. Some states, provinces or jurisdictions do not allow the exclusion or limitation of incidental or consequential damages or limitations on how long an implied warranty lasts, so the above limitations or exclusion may not apply to you. This warranty gives you specific legal rights, and you may also have other rights that vary from state to state or province to province. How to Obtain Warranty Service. Service: If service is required, do not return the product to your retailer. In order to obtain warranty service, contact the Consumer Affairs Division at 1-800-323-9005, 7:30 AM - 5:00 PM Central Standard Time, Monday through Friday. To assist us in serving you, please have the model number and date of purchase available when calling. 303 Nelson Avenue, Neosho, MO 64850-8806. Battery: BRK Brands, Inc. make no warranty, express or implied, written or oral, including that of merchantability or fitness for any particular purpose with respect to battery.
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