The BLU-CS is a satellite audio control for BSS Audio London Series Digital Signal Processors. It is build on a decora style panel for mounting in a single gang electrical box. The front side of the control has a lighted momentary pushbutton switch for turning on the satellite audio, and a pot for adjusting the volume of the audio signal. On the backside of the control is a single RJ-45 Cat5e connector for connecting the BLU-CS to the DSP.