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Review title: Stay clear of this headache
Product review: Received three BRK SC9120B replacements after original units (4 years old) started a low battery chirp with new Duracell batteries. Spoke with BRK rep. about problem and they sent three new units with Duracell batteries. The units worked fine for about two weeks before all three started to chirp a low battery signal. In that time our other three BRK smoke only detectors that were installed 4 years ago started the same chirping sound. Again called BRK and they were going to send us three replacements for them. After the nightmare of having six four year old BRK products fail in a matter of three weeks and three brand new replacement units fail in two weeks. I would stay away from BRK! I have read elsewhere about an issue with BRK and Duracell so I was a bit surprised when the new units arrived with Duracell batteries in them.
