“If you hard-wire the doorbell, can you also leave the battery installed as a backup in case power goes out, or do you have to choose one or the other (wired or battery)?”

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• You have to leave the battery in if hardwired. No option. It only works that way but bonus is yes it’s a back up.

  Answered by RYB1 6 years ago

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• You have to keep the battery installed it only runs off the included battery while it is hardwired it only provides a constant small charge to the battery

  Answered by Kimbal 6 years ago

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• Yes just leave it.

  Answered by Jamie 6 years ago

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