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Tools and Hardware Reviews of Kidde KN-COSM-B Battery-Operated Combination Carbon Monoxide and Smoke Alarm with Talking AlarmCustomer Review: Good But Check Date Manufactured Summary: 4 Stars
Product works well, but the usable life of the sensor is 7 years or less. That appears to be normal for this type of detector, but you should check the date it was manufactured to estimate how long it will last. It should have been manufactured within a year of purchase. Not sure if Kidde will replace one within the 5 year warranty period because the sensor's usable life has ended.
Customer Review: Good Deal Summary: 5 Stars
I am very happy with my purchase. The product works as described and is great value. I am using it in my camper and because it is only battery powered this is a great application.
It was shipped promptly and arrived in good shape.
Customer Review: Good Product, Great Value Summary: 5 Stars
Most combination detectors are much more costly. Quite honestly, even if I end up replacing the batteries 2-3 time a year, that is perfectly reasonable.
Customer Review: Good product Summary: 5 Stars
Second one I've owned. Onlt thing I ever had to do was replace the batteries once a year. First one just ran out its life time.
Customer Review: Good value Summary: 4 Stars
I really like the feature of having two live saving products in one unit. In addition like the ease of mounting and battery changing system. I hope that we never need its feature, yet there is piece of mind knowing that is there.
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