With a Ezviz smart video doorbell, you always know who's at the door. You can also talk to visitors via the app. Choose a doorbell with a battery, or connect it to your current wiring. Ezviz doorbells work by themselves completely. You don't need a bridge or base station to connect the video doorbell to the internet. In addition, you store your images without a fixed monthly fee. To hear an audio signal in your home, you add a physical receiver or chime.