The ESU Adapter Board 3 for decoders with a 21MTC interface is great for modelers wanting to take advantage of the full featured 21 pin decoders, but have a locomotive without any socket.
Its compact format is almost the same size as a 21 pin decoder and is also equipped with an extra mounting lug that can be easily broken off if not required.
The board is equipped with amplifiers (250mA each) for function outputs AUX3 through AUX6, which are only provided as logic outputs on all VHDM, NEM resp. NMRA compliant decoders. Thus the board offers the option of up to 8 outputs.
A wiring harness with 200mm (7.87") long NMRA color coded wires are presoldered to the board for the essential connections to the locomotive. Additional function outputs have solder pads for the modeler to make connections.
Dimensions: Length 31.0mm x 15.5mm (1.22" x 0.61") (With mounting tabs: 36.0mm x 15.5mm)