The MC2-KA is a 2-function HO and N scale hard-wire decoder with a 7 pin JST socket. The MC2 is designed for use in locomotives where a T-series or M-Series decoder is too large.
The MC2-KA i includes factory-installed Blue and Black&White wires to use when connecting Keep Alive®. In order to use Keep Alive® with this decoder, simply solder the wires from the Keep Alive® to the wires on the decoder.