The A-H484 multisource hub allows you to play up to four audio sources through your A-BUS system. You can select any source independently in each zone at the keypad or with an A-LRC1 remote control. Each zone may have one or two rooms with A-K3 Amplified Keypads.To control the sources, you can use either the A-LRC1 or the source manufacturer"s remote. The A-H484 passes source commands from each zone to the source selected in that zone. It also provides a common IR output to pass source commands from all zones.The A-H484 provides four zones. Multiple A-H484 hubs can be linked together to accommodate larger systems.