Woodland Scenics C1259 HO Scale Retaining Wall - Cut Stone (3-Pack) Decoder - 21-Pin These external devices can be

These external devices can be anything that supplies an electrical connection between the input pins (1-14) and the pins marked "GND"

Backboard and hoop are included

Build 1 of our 3 designs or build your own

It is a low odor

The TSU-21PNEM is a 1-Amp digital sound decoder with six function outputs designed for easy plug-in operation when mated to a 21-pin NEM connector

Woodland Scenics C1259 HO Scale Retaining Wall - Cut Stone (3-Pack) Decoder - 21-Pin These external devices can beWoodland Scenics C1259 HO Scale Retaining Wall Cut Stone 3 Pack Set contains 3 pieces. 3 1 8 in w x 5 1 4 h, 69 1 3 ft total scale length (7. 93 cm x 13. 3 cm, 21. 1 m total scale length) Use Retaining Walls alone, installed adjacent to each other to create straight or curved walls or use with Tunnel Portals. Cut to varying heights to create stepped, winged walls. Color easily and realistically with Earth Colors Liquid Pigment. Meets NMRA