“does it work off a battery my girl friends current thermostat only has four wires an d does no have a c wire”

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• does not work from batteries...you need a C-wire.

  Answered by BBBB 8 years ago

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• No. This requires the C wire

  Answered by Shawn 8 years ago

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• The power is run right from the heating unit. No battery. There are many youtube videos and instructions on honeywell to help as well

  Answered by Brandon 8 years ago

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• Unfortunately not. This unit does not have anywhere to install batteries. The C wire is a requirement for this unit (and many other smart thermostats).

  Answered by JohnT 8 years ago

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