The panels are pre-configured to display certain colours when the control inputs are active. Information about the displayed colours can be found on the SignalLED homepage. Before December 1st 2010, the display mode and colour options could be modified using an 8-way DIP switch, accessible during installation. From December 1st 2010, this changed - panels are still pre-configured, but to change colours and switching modes, you must use the LD-RPC remote programming controller. This provides a much simpler way to program any panel using a simple handheld remote control. Please note that the controller is sold separately and a single controller can program multiple panels.