First Alert
First Alert CO400 Battery Operated Carbon Monoxide Alarm
USD$16.79
4 stars out of 10 reviews
10 reviews
USD$16.79
$16.79
Free overnigh delivery
FSA and HSA eligible
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ReportCustomer reviews & ratings
4 out of 5stars
(10 reviews)
Most helpful positive review
5.00 out of 5 stars review
Verified Purchaser
02/26/2020
Great to have and hope it's not needed
Needed one and other one was very old
Linda
Most helpful negative review
1.00 out of 5 stars review
Verified Purchaser
04/14/2020
Steffany
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5.00 out of 5 stars reviewVerified Purchaser09/25/2020Good productThis item replaced one I had for 10 years and it only changed slightly. It is on my wall and working fine.Creekerken
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5.00 out of 5 stars reviewVerified Purchaser08/10/2020good reviewThe carbon monoxide detector came timely and of good quality. The directions were easy to follow and full informational to save and use as needed. I liked that it had a battery with it.Stefanie
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5.00 out of 5 stars reviewVerified Purchaser07/12/2020Larry
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5.00 out of 5 stars reviewVerified Purchaser04/18/2020First Alert CO400Purchased this to replace my existing one that was 7 years old. They changed the location of the rear mounting holes, but it is great other than that!PJatwalmart
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1.00 out of 5 stars reviewVerified Purchaser04/14/2020Steffany
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4.00 out of 5 stars reviewVerified Purchaser04/01/2020Easy installEasy to install and works well in the test mode.Bezier
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5.00 out of 5 stars reviewVerified Purchaser02/26/2020Great to have and hope it's not neededNeeded one and other one was very oldLinda
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5.00 out of 5 stars reviewVerified Purchaser01/22/2020Dead after six yearslasted six years then dead. five chirps says Im over itRussell
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4.00 out of 5 stars reviewVerified Purchaser08/29/2017Great purchase!Price was fair, it does what I need, I hope. I can't really tell if it is working. I would buy it again!Kenneth J
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1.00 out of 5 stars reviewVerified Purchaser02/15/2016Failed Consumer Repeat Purchase CriterionI bought this CO400 to replace an older CO400. I could have purchased another UL approved unit for half the price but didn't want to drill new holes. First Alert changed the hole pattern anyway!?@AllThumbs