ESU Adapter board for Hübner rail bus, 21MTC interface – item 53951

This adapter board is intended for owners of a Hübner rail bus in 1 gauge (item no. 4070 or 4071). There, a LokSound 2 decoder was installed on a special adapter in the motor car and a specially made light-changing decoder was installed in the control car. With the help of this adapter you can finally replace these old decoders with a modern LokSound 5 or LokPilot 5 Fx decoder. Plug a decoder with a 21MTC interface into the adapter board and then install it in the rail bus. Nothing needs to be rewired, all lamps will work correctly.Note: Not suitable for the new edition of the rail bus under Märklin® direction.