Smoke alarm goes off when it's cold (?)
On 12/10/2018 6:44 PM, bmay wrote:
replying to Berma, bmay wrote:
If they are hardwired to AC why did the batteries even come in the play
Because the batteries are there for backup in a power outage. They
notify you when week even if hard wired. Would you want to wait until a
power outage in a blizzard to find you need batteries?
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