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Review title: This model is unsafe - DO NOT BUY
Product review: My house uses 6 of these devices. About 5 years ago at 4:30 in the morning on Thanksgiving the smoke detector alarm went off. I got up and smelled what seemed like an electrical fire. I dashed around the house and when I couldn't find what made the smell I called the fire dept. While waiting for them to arrive I unplugged all of the detectors since this is the only way to get the alarm to stop. One of the smoke detectors was the source of the electrical fire smell. Something had fried inside the detector. When the fire dept arrived I gave them the detector and their comment was they had never before seen a smoke detector mal-function like this. Imagine having to call the fire dept because of a faulty smoke detector. Anyway if this was a one off incident I wouldn't be writing this review. The same thing happened again a couple of weeks ago. The same model smoke detector fried and set off all of them. No fire dept. call this time though.
