The Next18 to 21 pin adaptor board provides a handy way to use Next18 decoders in locomotives fitted with a 21 pin (21MTC) socket. Very similar to the ESU 51998 Next 18 to 21MTC adaptor board.

The adaptor features a standard Next18 socket, allowing all outputs and connections of a Next18 decoder to be used in a locomotive fitted with a 21MTC socket.

Note: this product is designed for locomotives already fitted with a 21 pin (21MTC) socket.

Dimensions: 18 x 20mm