Symetrix RC-3 Analog Wall Plate Volume Control for Symetrix DSP Systems (White)The RC 3 is a basic wall panel analog remote control. Many systems require only a simple and cost effective single point of control. For these situations, with minimal programming, the RC 3 is connected Symetrix DSP external control inputs to provide volume control or source or preset selection. Because its analog, the RC 3 lacks the sophisticated network intelligence of the ARC wall panels, yet it is well suited to basic single point of control