DCC90 - 2fn Standard DCC Decoder 8 Pin. - DCC91 - 2fn Standard DCC Decoder 21 Pin. - DCC94 - 6fn Pro DCC Decoder 8 Pin. - DCC95 - 6fn Pro DCC Decoder 21 Pin. - 2 Pin Harness. Supplier text and images used with UK distributor's permission where appropriate.