Symetrix ARCK1E Rotary-encoder

This is the white-faceplate ARC-K1e, Symetrix's modular knob controller for SymNet and Jupiter DSP systems. A push-button rotary encoder handles level and selection, an eight-segment LED ladder shows relative position at a glance, and two status LEDs flag the active control. An idle mode dims the LEDs in light-sensitive spaces, and hardware lockout pins accept an installer-supplied key switch to keep settings safe from tampering.

A single RJ-45 connection carries power and data from the DSP, and the panel runs on 6 to 24 V DC. It mounts in a standard single-gang U.S. electrical box behind a white Decora faceplate. When a room needs more than volume, up to four ARC-EX4e button expanders can be added alongside a K1e, and the ARC-PSe power supply feeds larger panel counts over long cable runs.