TRACKSIDE TURNOUT DECODER With trackside structure - HO Scale. This Trackside Turnout Decoder lets you upgrade your electrically operated turnouts to DCC quickly and easily. With the decoder installed inside the trackside structure, this flexible design can be used two ways. Advanced modeler can solder it to their control circuit board and hide the wires through a hole in the structure. For plug-and-play use with E- Z Track , simply snap off the break-away tab and plug in your E- Z Track connectors. Once connected, you can assign decoder addresses and operate your turnouts through your DCC system.