Doorbell Camera Installation
Do smart doorbells require batteries?
Some do. Others can be connected to the existing doorbell wiring for power, thus eliminating the need to manually change batteries. Those that run over doorbell power, use the batteries as a power backup in case the power goes out.
My door is next to a wall and there's not enough space between the door and wall. What are my options?
Smart doorbells do come in various sizes. However, if there still is not enough space, you could get a security camera system and have cameras watch your door and keep your existing doorbell.
There are several options including motion activated lights with cameras that can be used in this scenario.