The DCC90 is a large 8 pin decoder which is fitted with a removable 25mm harness including 2 function wires. Fitted in the decoder is a small 2 pin socket which can have the PowerPal inserted into it (sold seperately), This helps keep the locomotive moving in dirty or dead track sections.
2 Digit and 4 Digit Addressing
14, 28 or 128 Speed Steps