Each remote is an exact clone of each other.  The way the reomtes are configured you first selct floor of the house you are on, then select the room, then select the video source you would like to view.  The Key Digital video switch routes the signal via component video to the room, and the audio via a Russound Cav controller or  a dedicated Devon receiver depending on the audio capability of the room. The devices are controlled by 2 MSC 400s through serial (first choice) or IR (2nd Choice) depending on the capability of the device.  All of the video, audio components are on 2 computer telecom racks in my telecom room.