How do intercom systems work?
Intercom systems are a two way communication device that allows business and homeowners to speak with their guests before granting them entry. Visitors must press a button that acts as a door bell. Staff monitoring the intercom system can communicate with the visitor before unlocking the door and letting them in. Intercoms can also be integrated with cameras, providing a live video of the visitor.
Intercoms are widely used in schools to monitor visitors entering the premises. Nowadays, intercom systems are essential for controlling public access. Added protection can include burglar alarm, access control and surveillance systems.