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Review title: Hope to never need
Product review: I have about six of the smoke alert models that were installed when the house was built. A couple have given out after about 8 years, not bad really. They are interlinked so when one goes bad, they all feel the pain and beep until you find the bad one. It is a pain, but a good one. The interlink assures you that if something happens in one part of the house, everyone is notified. Anyway that brings me to this purchase of this model as a replacement. It is smarter (Carbon Monoxide detection) than the old ones and was pretty easy to install and they all still communicate with each other. I had to replace the harness (Electric connection retie) for the new ones but the operation was not that difficult, about 5 to 10 minutes for each replacement. They (the detectors) are happy and so am I.
