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Nest is designed to replace your wired doorbell. To receive full functionality you’d need to install a wired bell. The power for the doorbell is used to run the video camera.
Sorry, there was a problem. Please try again later.The Nest Hello requires existing doorbell wiring in order to be compatible at your home. Details here: https://nest.com/support/article/How-to-tell-if-Nest-Hello-will-work-in-your-home
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