I think this system is DC only. It will not work with DCC. To my knowledge, there is no simple unit like this that will actually reverse direction of a DCC locomotive.
The Bachmann site makes a definitive comment. It is for point to point operation. One track. There is no mention of DCC.
The E-Z Track label is not to be confused with EZ Command DCC. By definition, it means the EZ Track is DC only. This gets asked maybe once a year in the Bachmann forums.
Based on the pictures of the Bachmann 44547 shown on e-Bay, I’d say it is for DC use only. There appear to be two short end pieces that probably have a switch that the train touches to reverse the polarity of the track. The controller shown with it is not a DCC controller.
That one is for DC only, it makes a trolley/whatever go back and forth between two points on a stretch of track. It will work with the DCC on-board trolleys, but only if the power supply is a plain DC power pack. It’s a back and forth direction reverser, not a track polarity reverser like used for DCC reverse loops.
The power pack with it is A DC power pack only shown in the small pic at the bottom that you can enlarge to see the contents…
Bachmann makes trolleys and the like that will travel back and forth on the set. When the trolley hit s the bumper, it will pause for 5-7 seconds, then go back to the other bumper and pause before moving on…
As said, it is NOT the polarity reverser used in DCC applications to reverse the direction of a train.