To ensure the parking garage, vehicles security, parking garage management system needs and fire systems, security systems, BA system to establish close ties. Vehicle parking garage with the case to be served consumer control center, and also can accept fire control centers, fire evacuation order, so In case of fire, evacuation and traffic management unification. Parking management systems and garage security camera CCTV system network interconnection, the vehicle can be grazing library, stealing vehicles, traffic conditions are monitored for timely processing accident. Garage building intelligent building management as a part of property management work, their work will naturally be subject to the supervision of Equipment Management Center, and even some BA system equipment with the parking garage management system linkage. Such as garage lighting control lights need to be adjusted according to the garage area and the management of the number of lights, ventilation system according to the concentration of the garage and parking co number to start and control. Therefore, most of the parking garage management system management center equipped with a Rs 485 remote communication interface to exchange data with the BA system and other management information.