“the wired one if you loose power does it have battery backup”

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• yes, the wired Nest detector has batteries.

  Answered by Pete 8 years ago

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• Yes, the wired Nest has batteries.

  Answered by Pete 8 years ago

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• The wired versions have three batteries for back up power

  Answered by HappyChef 8 years ago

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• yes

  Answered by GallopingCow 8 years ago

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• Yes

  Answered by StewieG2 8 years ago

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