A doorbell is a small device that makes a sound when someone rings it, notifying the people inside a house or building that someone is at the door. Full definition
A small handful of Ring Doorbell Pro users noticed they were looking at someone else's house when checking their app, but Ring says they've addressed the issue. (androidcentral.com)
Amazon's Echo Show with a live stream of my Ring Video Doorbell Pro camera. (zdnet.com)