860008 21PIN MTC Adapter Board
The adapter board for decoders with 21MTC/21PIN interface is suitable for anyone who wants to quickly digitize their locomotives and equip them with many functions quickly . All outputs according to VHDM or NEM standard are available as solder connections.
Also if you want a smaller size you can break off the extra board with screw hole.
21-Pin MTC to 8-Pin DCC Plug Adaptor Pin-out &
21MTC Interface do not have PIN11