Video intercom door entry systems – how do they work?
A video intercom door entry system is a two way device that transmits and receives video transmissions. Ok that’s the technical speak..
The system works by installing a unit on the outside of the building that is connected to a monitor at reception or on a smart device. When someone approaches the building, they rig the bell which alerts you to the presence of a visitor. You will be able to see exactly who is there, speak to them and then grant them access to the building.