“Want to see view of wall mounting connection. If no batteries or plug in to house current, how does the display light up.”

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• I have mine plugged in to my PC and the display is fine, although a bit dim.

  Answered by LJ18 5 years ago

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• display does not light up but can make it darker using the option button.need to be in lighted area to see but if you get near it you can read it

  Answered by phone 5 years ago

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• It does have batteries but not sure of their function.

  Answered by glenncat 5 years ago

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