There are several options available if you’re in the market for a video doorbell, with Nest, Arlo and Netatmo all offering their own take on the smart doorbell and Ring providing three models alone.

The various options can be confusing, with some offering video, others not, and some requiring hardwiring, while others can simply be stuck onto the front of your door.
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https://www.pocket-lint.com/smart-home/buyers-guides/nest/142351-nest-hello-vs-ring-video-doorbell-vs-doorbell-2-vs-doorbell-pro