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Description
First Alert Carbon Monoxide Detector, Battery Operated, Test & Silence Button, CO400, WhiteFirst Alert Carbon Monoxide Detector, Battery Operated Alarm With Test And Silence Button, CO400, White, 1 Pack Keep your family safe with this easy to use, battery operated carbon monoxide alarm; Battery powered alarms provide continuous monitoring of CO levels, even if there's a power failure Features an advanced electrochemical carbon monoxide sensor that accurately detects carbon monoxide levels, no matter where the detector is placed in the room.
First Alert Carbon Monoxide Detector, Battery Operated Alarm With Test And Silence Button, CO400, White, 1-Pack- Keep your family safe with this easy to use, battery operated carbon monoxide alarm; Battery powered alarms provide continuous monitoring of CO levels, even if there's a power failure
- Features an advanced electrochemical carbon monoxide sensor that accurately detects carbon monoxide levels, no matter where the detector is placed in the room.The alarm sequence should last 5-6 seconds. If it does not alarm, make sure fresh batteries are correctly installed, and test it again. If the unit still does not alarm, replace it immediately
- A loud 85 decibel alarm sounds when CO levels reach dangerous , Battery Replaceable - Yes
- To ensure complete protection make sure to place one on each level of your home and in each bedroom
- 5-year limited warranty; Equipped with end of life signal chirp, so you know when it s time to replace the unit for safety
- All first alert CO alarms are rigorously tested to meet UL standards
- First Alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958 (Based on a First Alert Brand Trust Survey in February 2018)
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 12 reviews
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Product Reviews
★★★★★ 5
Great for creating open shelving rather than adding cabinetry
I purchased two of the 24 inch shelves to create a coffee nook in my kitchen. They are very high-quality, attractive, were easy to install, and are sturdy. These shelves are a great alternative to having to add cabinetry to store items.
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Reviewed in the United States on December 31, 2025
★★★★★ 5
Sturdy and easy to assemble.
Size: 31.5 Inch, Color: Rustic Brown
Remarkably easy to assemble, sturdy, looks great on my wall. My only complaint is that you can't really hang anything off of the top bracket -- the promotional photos show an item hanging from there, but they've used an item with a very strangely shaped handle to make it work. Booo.
Still, great little shelf. Happy with it.
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Reviewed in the United States on October 30, 2025
★★★★★ 5
Great Spacesaver and looks good too.
Size: 31.5 Inch, Color: Rustic Brown
Bought this to free up counter space and cupboard space. And it does the job perfectly. Easy to assemble and install, but make sure you have another set of hands nearby cause it could be a little tough to install by yourself.
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Reviewed in the United States on February 19, 2026
★★★★★ 5
Quality shelf
Love this shelf. Super easy to put together. Strong and sturdy. Used as open shelving in kitchen . Space saving and priced well. Several color options to choose looks like photo
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Reviewed in the United States on April 8, 2026
★★★★★ 4
Very sturdy!
Size: 31.5 Inch, Color: Rustic Brown
I absolutely love these shelves. They were easy to put together and hang up and they look fantastic. I ended up having to use extra boards to screw it to the wall just because of the location of the wall stud, but you can't notice it at all, really. They are pretty big , the picture doesn't do it justice. I'm very pleased with this purchase.
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Reviewed in the United States on March 25, 2024