This is the Marklin 74041 FCC Interference Suppression Set, 2 amps for HO scale layouts. This set is for preventing interference with radio/television/cell phone reception. The set consists of a circuit board with spade connectors for C Track and red and brown hookup wires. One set is required for each conventional and digital power circuit. The set is designed for a maximum 2 amps user current. Recommended for the Mobile Station and for analog train controllers.

The FCC interference suppression set is required only in the USA!