Intercom systems are electronic communication systems used to allow people to communicate with each other remotely. They can be used in various settings, such as offices, houses, stores, hotels, and other buildings.

Intercom systems often consist of two or more units, with one unit placed at the door or entrance of a building and another unit placed inside the building. When someone comes to the door, the person inside the building can see the visitor and communicate with them through the intercom. This can be done using a speaker and microphone or by using a video camera.

Intercom systems can be used to manage and secure access to a building or space, and to communicate with visitors or suppliers who come to the door. There are various types of intercom systems on the market, including wireless systems, systems with wired connections, and systems with video cameras.