This decoder is for converting Märklin/Trix H0 36000 series Hobby locomotives. The märklin SoundDecoder mSD3 has a 21-pin 21mtc (adheres to NEM 660) interface connector and an accompanying interface connector circuit board for converting 36000 series locomotives with trucks.
The märklin SoundDecoder mSD3 supports the digital formats mfx, MM1, MM2, and DCC.
The decoder has preset sound for a diesel locomotive (Herkules).
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