Double-sided Pole Displays is used to display that solve the classic problem, by using data pass-through data capabilities. It allows connection of multiple pole displays, cash drawers, printers and other devices to a single output port. In the pass through mode, a pole display monitors the incoming data, and then decides to display the data or pass it to the next down-stream device. It is used for better contrast and easier viewing. All standard Displays support moving sign advertisements with a single message download and eliminating constant application software refreshing.