The RDL RCX-5CM Room Combining System Controller by Radio Design Labs is designed to manage audio sources and amplifier inputs across up to five rooms, supporting microphone muting functions. It features selectable music input from non-combined rooms and a paging input that can override normal operations, offering versatile control. The controller supports mic and line inputs for each room, along with front-panel volume adjustment and RDL Dual-LED VU metering for each audio source. Its simple programming and operation, combined with compatibility for wall-mounted remote input panels and electronic switching with memory, make it adaptable to a wide variety of room layouts.