We installed our Nest Hello. It’s a fancy doorbell.
It can be powered by existing doorbell wiring, although we didn’t have one to start with. Transformers are easy enough to find though.
It was chosen because it integrates with our Google Home devices, phones, watches, etc… The facial recognition is a pretty cool feature, it will tell you who is at the door before they have even pushed the button.
Our WiFi signal isn’t very strong outside of our house, so we have to use it at a reduced bitrate, but the video quality is still pretty good. There is currently about a 2 second delay from button push to announcement inside – not too bad.
We hope to bury the wire when we get around to re-pointing the front of the house.