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Pro is slimmer and hardwire setup only I believe. The Doorbell 2 offers hardwired and/or wifi but is wider.
Sorry, there was a problem. Please try again later.The pro can only be hardwired. Meaning no battery option. The ring peephole or ring 2 can be used via battery [which it comes with] or hardwired. Everything else is pretty much the same between the different ring devices.
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