© 2014 RailMaster Hobbies TCS HO Scale Decoders  A series - Drop in for Atlas, Athearn and KATO make selection DP series - Plug ‘N Play with 8 pin NMRA connector make selection EU series - Plug ‘N Play with 21 pin connector for European locomotives make selection M series - Small hardwired decoders make selection KAM series - M series with TCS Keep Alive make selection T series - Comes with 9 pin socket and wiring harness make selection KAT series - T series with TCS Keep Alive make selection LL series - For Life Like/Walthers locomotives make selection MC series - Small decoder with 7 pin mini harness make selection