Patent ID: 6871103

Claim:
A control system for a car wash having a plurality of input electrical devices and a plurality of output electrical devices, the control system comprising: a central controller for controlling the operation of the output electrical devices and receiving input data from the input electrical devices; at least one input board coupled to the central controller for supplying input data to the central controller, the input board being configured to be connected to one or more of the input electrical devices, the input board being coupled to the central controller by an input communication cable; and a plurality of output relay boards selectively connectable to each other by a jumper cable, wherein at least one of the output relay boards is coupled to the central controller by an output communication cable and configured for receiving an output command from the central controller, wherein the output command sent to one of the output relay boards is received at the other output relay board through the jumper cable, each of the output relay boards being connected to a power supply and at least one of the output electrical devices, wherein each of the output relay boards selectively couples the power supply to the output electrical devices upon receiving the output command from the central controller.