The RS-A series consists of audio routing switchers which are both expandable and versatile. All units and control cabling are separate purchase to allow a user to configure a routing system based on their operational and budget re-quirements. Configure with RS-V series to route audio and video. Routing control of video and audio can be performed via REMOTE connector of RS-V units when RS-A units are configured with RS-V series units plus optional remote control unit or computer.