The LokSound by ESU Dummy Plug Adaptor Board for LokSound 5 L or V4.0 Decoder Socket (blindplug) replaces a LokSound 5 L or LokSound L V4.0 decoder in locomotives that are to run on analog systems. The dummy plug is plugged onto the Adat board 51959. DIP switches can be used to configure which function outputs should be switched on or off. The definition of the direction of travel is possible. The dummy plug is useful for those who want to prepare their locos for DCC decoder installation using the 51959 board, but whom do not want to install a LokSound 5 L decoder immediately. The Dummy Plug Adaptor Board is part of the broad assortment of ESU DCC accessories.WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov