There are lots of good reasons to get a video intercom. Security is one of them. Installing a video intercom system at your front door improves your home or business security. A video intercom enables you to not only talk to someone at your front door, but also to see them as well. That gives you more information to make the decision whether you want to let someone in or not without even getting near the door.
A video intercom consists of at least two components, a weatherproof camera and door bell button unit that goes at the front door, and a monitor unit that enables you to see who is at the camera. You can buy monitors that provide either a black and white or color picture.
When someone presses the call button on the video door bell it activates its camera and alerts the indoor monitor. You then talk to them while you view their image. You can even press an open lock button if you have an optional electric door lock installed.
Watch the video below for more information: