Smart doorbells start as basic doorbells in the 1870s. They work with springs and chains. In the 1930s new doorbells used radio waves to make sound. These were the first wireless types. In the 1970s video doorbells came. People could see who was at the door. These were part of home security ...

Traditional doorbells are those doorbells which have no advanced technologies such as wireless, video cameras, audio systems, etc. It just simply alerts you that someone has come other side of the door. But smart doorbells have wireless systems, video cameras, audio systems and lots of advantages. ...