The SZ 6104 Switcher is used to connect together two central units for installations that share resources and for advanced system configurations. Two separate systems are routed to the SZ 6104 Switcher, so when one CU is turned off, the other will automatically begin operating the equipment as a single large system. This is useful for collapsible rooms that may operate occasionally as one large room, or for providing redundancy with a backup CU. For remote management, the SZ 6104 connects to an external control system (AMX, Crestron).