MyLaps Hybrid Black Edition (2-wire) Transponder The Hybrid (2-wire) transponder is the same size and features many of the same specs as the RC4 transponder, but it is backwards compatible with older decoder boxes. This transponder does not support car ID numbers. It is compatible with all AMBrc2 decoder boxes and MyLaps RC3 and RC4 decoder boxes. View attachment 3135 MyLaps RC4 (3-wire) Transponder The RC4 (3-wire) transponder is the latest in the line of transponders... Team Associated New Black Edition MyLaps Transponders! Continue reading...