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Customer Reviews for First Alert First Alert Battery-Powered Carbon Monoxide Detector, CO400

First Alert First Alert Battery-Powered Carbon Monoxide Detector, CO400

The First Alert Battery-Powered Carbon Monoxide Detector, CO400 is an easy to use carbon monoxide detector that comes with one carbon monoxide alarm, a user's manual, and two AA batteries. This carbon monoxide detector features a test/silence button that silences the alarm and allows you to test its functionality. The First Alert alarm monitors and re-alarms if carbon monoxide levels persist sounding a loud 85-decibel horn. No installation is required for this carbon monoxide detector, and the attractive design allows the unit to be placed anywhere you need it. The First Alert Battery-Powered Carbon Monoxide Detector, CO400 includes an optional wall mount with no outlet required, and is powered by two AA replaceable alkaline batteries giving you peace of mind even during power outages.
Average Customer Rating:
4.583 out of 5
4.6
 out of 
5
(48 Reviews) 35
Open Ratings Snapshot
Rating SnapshotOverall Rating Totals
5 stars
37
4 stars
7
3 stars
1
2 stars
1
1 star
2
Customer Recommendation94%45 out of 48reviewers would recommend this product to a friend.
Customer Questions & Answers:
10 Questions | 34 Answers
Open Ratings Snapshot
Rating SnapshotOverall Rating Totals
5 stars
37
4 stars
7
3 stars
1
2 stars
1
1 star
2
Customer Reviews
Review 1 for First Alert Battery-Powered Carbon Monoxide Detector, CO400

Great item and service.

12/18/2012
By ,
Grants Pass, OR
4 out of 5
4 out of 5
I only rated this a 4, as I don't know how it will perform down the road.
It appears to be a quality device. I really like the fact that it is AA battery powered.
The price was also very good.
The service, delivery, and attitude by WalMart was excellent.
Product Attributes:
Value
5 out of 5
5 out of 5
Meets Expectations
4 out of 5
4 out of 5
Recommends this product? Yes
Age:65 or older
Gender:Male
Ownership:2 - 7 weeks
Usage:Every day
0points
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Review 2 for First Alert Battery-Powered Carbon Monoxide Detector, CO400

Product is a lifesaver.

03/07/2013
By ,
New York
5 out of 5
5 out of 5
I had an older First Alert CO detector, and the alarm was beeping. I changed the battery and this did not solve the problem. I figured the older unit had aged out and needed to be replaced, but I turned off my heating system and opened windows and ventilated the house, I also heated with my wood fireplace in 21 degree weather for 2 days, and immediately bought this CO400 unit. When this alarm went off again after turning on the heating system, I called my heating contractor. The entire furnace had to be replaced as the heat exchanger was full of holes (it looked like a swiss cheese) and was allowing significant CO exhaust fumes into my hot air vents. I could have been killed. I am very happy I put in this new unit immediately.
Product Attributes:
Value
5 out of 5
5 out of 5
Meets Expectations
5 out of 5
5 out of 5
Recommends this product? Yes
Age:65 or older
Gender:Female
Ownership:2 - 7 weeks
Usage:Every day
+1point
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Review 3 for First Alert Battery-Powered Carbon Monoxide Detector, CO400

horrible

02/25/2013
By ,
Venice, Fl
1 out of 5
1 out of 5
only one thing good about product is it came with the batteries. otherwise we read instructions, installed the batteries and the plastic front lid would not close properly. we tried, and tried but no results. would not recommend. returned to the store.
Product Attributes:
Value
1 out of 5
1 out of 5
Meets Expectations
1 out of 5
1 out of 5
Recommends this product? No
Age:55 - 64
Gender:Female
Usage:Never
-2points
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Review 4 for First Alert Battery-Powered Carbon Monoxide Detector, CO400

Great Carbon Monoxide Detector

02/21/2013
By ,
Rochester, NY
4 out of 5
4 out of 5
Good for a "battery operated" - seems the cheapest one out there.....make sure you keep
batteries checked in the unit..
Recommends this product? Yes
Age:55 - 64
Gender:Female
Ownership:2 - 7 weeks
Usage:Every day
0points
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Review 5 for First Alert Battery-Powered Carbon Monoxide Detector, CO400

Button was broke in package

02/19/2013
By ,
Miami FL
2 out of 5
2 out of 5
Purchased for engine room of our yacht. While installing, alarm would not quit. The button was broken in the package. Exchanged for a more upgraded one.
Recommends this product? No
Age:45 - 54
Gender:Female
Ownership:1 week or less
Usage:Never
+1point
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Review 6 for First Alert Battery-Powered Carbon Monoxide Detector, CO400
12/11/2012
By ,
Folcroft, Pa.
5 out of 5
5 out of 5
One thing I really like about this product is it takes 2 AA batteries instead of the standard 9 volt.
Recommends this product? Yes
Age:65 or older
Gender:Male
Ownership:2 - 7 weeks
Usage:Every day
0points
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Review 7 for First Alert Battery-Powered Carbon Monoxide Detector, CO400

I am happy

11/24/2012
By ,
Ohio
5 out of 5
5 out of 5
Easy to install; for the $ was a good choice.
Product Attributes:
Value
5 out of 5
5 out of 5
Meets Expectations
5 out of 5
5 out of 5
Recommends this product? Yes
Age:45 - 54
Gender:Female
Ownership:2 - 7 weeks
Usage:Every day
0points
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Review 8 for First Alert Battery-Powered Carbon Monoxide Detector, CO400

Great Product!

11/22/2012
By ,
Lewiston, ME
5 out of 5
5 out of 5
Very pleased with this product and happoy it takes AA batteries, them square 9 volt ones are annoying. The installation was very easy and it came with plastic screw anchors with correct drill bit size info. Also it had a paper stencil to use as a guide for hole spacing.
Installed easily, straight and perfectly the first try. Easy peasey lemon squeezy.
Product Attributes:
Value
5 out of 5
5 out of 5
Meets Expectations
5 out of 5
5 out of 5
Recommends this product? Yes
Age:35 - 44
Gender:Male
Ownership:2 - 7 weeks
Usage:Every day
+3points
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Review 9 for First Alert Battery-Powered Carbon Monoxide Detector, CO400
10/29/2012
By ,
lowell ma
1 out of 5
1 out of 5
received and not working
Product Attributes:
Value
1 out of 5
1 out of 5
Meets Expectations
1 out of 5
1 out of 5
Recommends this product? No
Age:35 - 44
Gender:Male
Ownership:1 week or less
Usage:Never
-3points
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Review 10 for First Alert Battery-Powered Carbon Monoxide Detector, CO400

Great little detectors

10/26/2012
By ,
wisconsin rapids, wi
5 out of 5
5 out of 5
I purchased two, one for the basement and for main floor of our home. They are a nice size and blend in anywhere. I did not mount to a wall.
Product Attributes:
Value
5 out of 5
5 out of 5
Meets Expectations
5 out of 5
5 out of 5
Recommends this product? Yes
Age:35 - 44
Gender:Female
Ownership:2 - 7 weeks
Usage:Every day
0points
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Review 11 for First Alert Battery-Powered Carbon Monoxide Detector, CO400

easy

10/26/2012
By ,
Leavenworth, KS
5 out of 5
5 out of 5
very simple to install batteries. ready to use. inexpensive protection for the family.
Product Attributes:
Value
5 out of 5
5 out of 5
Meets Expectations
5 out of 5
5 out of 5
Recommends this product? Yes
Age:55 - 64
Gender:Male
Ownership:2 - 7 weeks
Usage:Every day
0points
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Review 12 for First Alert Battery-Powered Carbon Monoxide Detector, CO400

Easy to Install and a Great Value

04/25/2012
By ,
IN
5 out of 5
5 out of 5
I'm glad I purchased this carbon monoxide detector. It was very easy to install and already came with 2AA batteries. It was also the most inexpensive I could find - a good value. The manual is easily understood, too.
Product Attributes:
Value
5 out of 5
5 out of 5
Meets Expectations
5 out of 5
5 out of 5
Recommends this product? Yes
Age:25 - 34
Gender:Female
Ownership:1 week or less
Usage:Every day
+3points
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Review 13 for First Alert Battery-Powered Carbon Monoxide Detector, CO400

Great!

04/04/2012
By ,
Milwaukee, WI
5 out of 5
5 out of 5
This does exactly what it is designed to do. I liked the fact that you don't have to mount it on the wall. I just set ours inside one of our kitchen cabinets - nobody even has to see it!
Recommends this product? Yes
Age:25 - 34
Gender:Female
Ownership:2 - 7 weeks
Usage:Every day
+1point
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Review 14 for First Alert Battery-Powered Carbon Monoxide Detector, CO400

Keeping the College Student Safe

01/02/2012
By ,
Texas
5 out of 5
5 out of 5
I bought this for my college grandson living off campus in an older triplex with gas heating. I wanted him to be safe. This detector is small, compact & should fit most anywhere. Of course you really don't know how this product will work until you have a problem. I felt if ever needed, I could trust First Alert as a safe option.
It was purchased online using store pick-up same day. Excellent service. Wal Mart is making this feature work for it's customers.
Recommends this product? Yes
Age:65 or older
Gender:Female
Ownership:1 week or less
Usage:Every day
+2points
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Review 15 for First Alert Battery-Powered Carbon Monoxide Detector, CO400

Reasonably priced and easy to install

07/31/2011
By
5 out of 5
5 out of 5
Installed 16 of these carbon monoxide detectors in a lodging facility to comply with Health Dept regulations. They were reasonably priced and easy to install.
Product Attributes:
Value
5 out of 5
5 out of 5
Meets Expectations
5 out of 5
5 out of 5
Recommends this product? Yes
Age:55 - 64
Gender:Female
Ownership:2 - 7 weeks
Usage:Every day
+1point
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Review 16 for First Alert Battery-Powered Carbon Monoxide Detector, CO400
07/22/2011
By
5 out of 5
5 out of 5
since the law of July 1 2011 I bought this for that reason it satisfies the law on cabon monoxide detector in the home and I feel safer knowing I won't die because I was'nt warned. It's up there with it's companion smoke detector.
Product Attributes:
Value
4 out of 5
4 out of 5
Meets Expectations
4 out of 5
4 out of 5
Recommends this product? Yes
Age:55 - 64
Gender:Female
Ownership:2 - 7 weeks
Usage:Every day
0points
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Review 17 for First Alert Battery-Powered Carbon Monoxide Detector, CO400
07/21/2011
By ,
Livingston, CA
5 out of 5
5 out of 5
Looking for a) inexpensive, b) reliable, c) brand-name manufacturer, d) easy to install, 3) meets all California state requirements for CO detection/alarm devices?
Look no further, this is it.
Product Attributes:
Value
5 out of 5
5 out of 5
Meets Expectations
5 out of 5
5 out of 5
Recommends this product? Yes
Age:65 or older
Gender:Male
Ownership:5 - 6 months
Usage:Every day
+3points
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Review 18 for First Alert Battery-Powered Carbon Monoxide Detector, CO400

Easy to install and aedquite for the job.

07/14/2011
By ,
La Quinta, CA
3 out of 5
3 out of 5
The First Alert Carbon Monoxide detector comes complete with 2 AA batteries and mounting screws.
The instructions have a template so the installer knows where to install the mounting screws.
Just, mount the detector on the wall, install the batteries and one is ready to go.
It meets the UL requirements.
Recommends this product? Yes
Age:55 - 64
Gender:Male
Ownership:1 week or less
Usage:Every day
+3points
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Review 19 for First Alert Battery-Powered Carbon Monoxide Detector, CO400

Tiny but Mighty

05/04/2011
By ,
Pennsylvania
5 out of 5
5 out of 5
If you have a fireplace or gas appliances in your home, you should have this product. I have peace of mind now knowing I have a Carbon Monoxide Detector in the home. Easy to hang. Follow instructions about where to place it.
Product Attributes:
Value
5 out of 5
5 out of 5
Meets Expectations
5 out of 5
5 out of 5
Recommends this product? Yes
Gender:Female
Ownership:2 - 7 weeks
Usage:Every day
+4points
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Review 20 for First Alert Battery-Powered Carbon Monoxide Detector, CO400

Excellent Value

01/11/2011
By ,
Mansfield Center, CT
5 out of 5
5 out of 5
The detector is easy to install and test. It is a great value for the peace of mind it provides.
Product Attributes:
Value
5 out of 5
5 out of 5
Meets Expectations
5 out of 5
5 out of 5
Recommends this product? Yes
Age:65 or older
Gender:Male
Ownership:2 - 3 months
Usage:Every day
+3points
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1-20 of 36 total reviews
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