Building access control system, comprises main control unit that receives access codes and provides multiple access doors, when correct access codes are received through multiple entry units

摘要

The system comprises a main control unit (116) that communicates with the entities within the building. A display on the main control unit displays the contact codes for selected tenants. The main control unit receives the access codes through multiple code entry units (110). The main control unit provides many controlled access doors (108), when a correct access code is received from entry units.