Woodland Scenics 1255 Tunnel Portal Random Stone, Single (HO) RECSES_2026-6-25_CUR_1045 The märklin SoundDecoder mSD3 has

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

When the headlights are off at both ends

This digital control is independent of the conventional or digital control of the trains

Train length 102

Woodland Scenics 1255 Tunnel Portal Random Stone, Single (HO) RECSES_2026-6-25_CUR_1045 The märklin SoundDecoder mSD3 hasCover your HO scale tunnels with a random stone portal and color with Earth Colors Liquid Pigment. Outside: 5 5 8 in W x 5 1 16 in H (14. 2 cm x 12. 8 cm) 2 13 16 in W x 3 11 16 in H (7. 14 cm x 9. 36 cm) Meets NMRA specifications Woodland Scenics C1255