1676 8-function decoder for HO-Scale locomotives equipped with a MTC21-pin connector and Keep-Alive wires and connector – #TCS-EU821-KAC – Litchfield Station
MTC21 Decoder adapter
MTC21 Adaptor, train-O-matic
21-Pin to 8-Pin Decoder Adaptor for DCC & DCC Sound Locomotives
PluX22- und 21 MTC-Adapter - Tams Elektronik
SBS4DCC - The Infamous 21MTC Interface Connector
MTC21 adapter for 8-pole decoder (NEM652) – Almrose
SBS4DCC - The Infamous 21MTC Interface Connector
8-Pin to 21-Pin Decoder Adaptor (DCC NEM652 to 21 Pin MTC Socket)
European Hardwire Plug (MALE) 21-HWM-5PACK – #TCS-1653 – Litchfield Station
8-Pin to 21-Pin Decoder Adaptor (DCC NEM652 to 21 Pin MTC Socket)
DCC Train-O-Matic Mini MTC21 Decoder with SUSI Connector (M21S) 9145386315766 | eBay