Read rest of the answer. Also question is, does Nest doorbell need wiring?
Power requirements for Nest cameras and Nest Hello. Nest cameras need to be plugged into a power outlet using their included cable and AC adapter. The Nest Hello video doorbell connects directly to your doorbell's low voltage wiring, or it can use the optional Indoor Power Adapter (available in the US only).
Beside above, is Ring or nest doorbell better? Overall Winner: Nest Hello Compared to the Ring Video Doorbell Pro, it has a better price, more features — and perhaps most important — better video quality. However, Nest could improve its cloud-storage plans, which are miserly compared to Ring's. And we wish that Amazon and Google would make up, already.
Moreover, can you install a nest doorbell without an existing doorbell?
You can install Nest Hello if you have one of the following: The Indoor Power Adapter: If you don't have a doorbell or chime, or your current doorbell system is incompatible, this optional accessory lets you plug Nest Hello into an indoor power outlet.
What if my ring doorbell gets stolen?
Ring does offer Theft Protection, so if a user's doorbell is stolen, they can present the police report to Ring and Ring will replace the device for free.” Owners should report thefts to Ring no later than six months after the police report concerning the theft. Ring will replace the stolen device with the same model.