Patent ID: 7671544

Claim:
A decentralized low-voltage bus for managing a load circuit with lights, the decentralized low-voltage bus comprising: a) a hub comprising connection ports for coupling to low-voltage periphery devices and for distributing power to the low voltage periphery devices, wherein low voltage periphery devices include a sensor and a control switch; and b) means for changing a mode of operation of the sensor or the control switch wherein the lights are controlled by a plurality of control units in response to control signals from the sensor and the control switch that are transmitted over the low-voltage bus, wherein the control signals are transmitted and the power is distributed to the low voltage periphery devices according to a multiple signal protocol via cables with RJ45 interconnects for electrically coupling to the cables, wherein the multiple signal protocol includes quiet time control signals, mode control signals, occupancy signals, positive dimming control signals and negative dimming control signals.