Carbon monoxide (CO) is the leading cause of accidental poisoning deaths in America, yet many people don’t know they are suffering from CO poisoning until its too late. Since symptoms of CO poisoning are like the flu, you might not even know you’re in danger at first. That’s why a carbon monoxide alarm is an excellent way to protect your family. It can detect the CO you can’t see, smell or taste in the air. The First Alert CO400 carbon monoxide alarm uses an electrochemical carbon monoxide senso
3 thoughts on “First Alert CO400 Battery Powered Carbon Monoxide Alarm”
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CO ALARM – everyone w/gas should have one,
We tested it on the truck’s exhaust and it went off at about 60 ppm according to our digital CO Meter.
Which proves it works to Government Standards. This model does what it is supposed to do, the more expensive models just have more features that you probably will not notice on an everyday basis anyway.
This is the least expensive model we have seen that functions, so we hope at this price everyone should have one in their home and garage.
Please replace batteries regularly……
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I’ve had 2 of these now and both were defective,
Bought this in November. Put it up and within days it’s “chirping” 3 times per minute which means (according to the device) that it is malfunctioning and needs to be replaced. Amazon was awesome and sent out another one right away. Same exact problem. I’ll be returning the second one and choosing another alarm.
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A must have!,
We purchased 5 of these; one for each bedroom, the family room, and an elderly neighbor’s bedroom. Install was painless. It does, however, need to be mounted on a wall, not a ceiling, so we chose a spot over each bedroom door.
Carbon Monoxide MIXES with the air. It does not stay low or high. You can’t see it or smell it. That’s why it’s so deadly.
The piece of mind of having these installed is enormous. More people die of CO poisoning than from fire. If you don’t have a CO detector, get one, two, etc. The price is right.
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