Modern technology is changing the face of security all the time. The first point of security is usually the entrance to the property. This is where video intercom security systems help control access both for security purposes as well as for convenience.
If you are looking for a home security system, this is where you begin. First of all, you will have to decide whether you need to mount your video intercom on your gate entrance or at your front door.
It depends on where the first barrier is to visitors, strangers or friends. It is always best to be able to see and hear when there is a knock at the door, and know immediately who is there before you open up, and perhaps get a nasty surprise.
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Most models have a camera pointed at the entry area. There is a built-in microphone. When the door or gate bell is rung, this activates the camera and immediately you can see who is there on your screen inside the premises. You can both see and hear the person and talkback if you choose.
Then you decide whether you want to admit this person or not. You will find a large variety of types of video intercom units, and you will have to look around and decide which type and model suit your needs.
The different makes of video intercom security systems have such a variety of features; you will have to investigate them to see which are necessary for you and which would just be unimportant extras that you would rather not pay for.