DCD-ADS-4sx Accessory Decoder CDU Solenoid Drive SX 4-Way with Power-Off Memory and Protective Case option-set-w-wagon-1 Mk1 coaches were built at

Mk1 coaches were built at many BR workshops as well as by outside contractors including Metro-Cammell

Loco-hauled Mk1s were in front line service for half a century

air conditioning - so no opening windows in the saloon area (Mk2D)

and the final evolution of the Mk2

while numerous components such as the boiler were manufactured elsewhere

DCD-ADS-4sx Accessory Decoder CDU Solenoid Drive SX 4-Way with Power-Off Memory and Protective Case option-set-w-wagon-1 Mk1 coaches were built atAccessory Decoder CDU Solenoid Drive SX 4 Way with Power Off Memory and Protective Case ADS 4sx is an easy to use 4 way DCC accessory decoder for solenoid turnout motors with power off memory. ADS 4sx has a CDU built in to each output and is the most reliable and most powerful solenoid decoder available, yet it stores all its power on board so does not drain your DCC track power! Packed with features including a CDU discharge button, Panel LED or