In some systems, press the All Call button and make an announcement. With the LEF masters, press the All Call button, then the TALK button to make the announcement. The ability to make an announcement from one location to all other inside locations simultaneously. Paging all zones in a system simultaneously. Intercom station used to communicate with the visitor, and equipped with a door release button to allow the visitor entry into the building.
Masters monitor any other station in the system.
Sub stations cannot monitor another station. An intercom unit designed for outdoor use, able to call and communicate with an intercom station inside. The ability to turn on and off an outside light that will illuminate the area surrounding a door station. A call station located next to a toilet or shower, allowing a person to call for help. The call from the bathroom pull cord must be reset at the station itself.