PCB colour might vary. 4 amp DCC power booster. See wiring diagram.
Synchronous 4 amp DCC power booster and power supply.
Hornby R7337 HM7020 PSU Solution Harness Digital 15V 4 Amp Transformer Power
RCV1604 Quad control 4 amp New DCC controller 4 model railway+power supply OO/N
Macro Quad control 4 amp New DCC controller 4 model railway+power supply OO/N
MX Macro Quad control 4 amp New DCC controller 4 model railway+power supply OO/N
