TTSC4 Dual Dapol Servo Semaphore Signal DCC Controller Class_Class-08 The British Railways Mk1 was

The British Railways Mk1 was the designation given to BR’s first standard design of main line coaching stock

HO Streamline 83' Line No8 Left Hand Turnout (Insulfrog)

and the prototype model later in December 1978

Selectable for operation with 14/27

The SC4 and SC400 have been designed specifically to power and control the new Dapol Servo type OO bracket and O gauge semaphore signals and feature safe optically isolated volt free contacts and a regulated protected power output

TTSC4 Dual Dapol Servo Semaphore Signal DCC Controller Class_Class-08 The British Railways Mk1 wasDual Dapol Servo Semaphore Signal DCC Controller. The SC4 is specifically designed to power and control the new Dapol Servo controlled signals which have three wire inputs for each signal. An SC4 can control one, two or a twin head (e. g. Bracket) servo signal and each can easily be assigned any DCC accessory address & run the two arms independently or together in Home Distant pairs. It also incorporates a regulated power supply to provide a stable