DCCconcepts DCD-ZN68 Zen 6 Pin Versatile 2 Function Decoder with Stay Alive
Much like its "bigger brothers" the N68 decoders have very smooth motor drive characteristics which allow for slow speed running even inside N scale locomotives. These decoders are small enough to fit in any N scale locomotive and with the 8 pin attachment you can use them on OO/HO scale locos as well.
This pack includes a stay alive unit which are designed to aid your locomotives running characteristics during slow running. This unit basically keeps the decoder "alive" for a few milliseconds if dirt or dead spots are located on the track.