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If the backup battery is still charged, yes. The backup battery is replaceable (located in the bottom of the unit).
Sorry, there was a problem. Please try again later.If there's an outtage and even if the ac adaptor isnt plugged....it will still sound!
Sorry, there was a problem. Please try again later.Yeah
Sorry, there was a problem. Please try again later.It didn't with me, but it does have battery backup on the bottom. Once I put them in, I haven't had an issue.
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