SRV4 Servo Controller (4-channel) 12v dc Allows the final section to

Allows the final section to simulate a return to clear using timers for realistic 3- and 4-aspect signal operation

and Hornby HM7000 layouts

Monitors trains entering and leaving a protected section of track

Automatically sets the entry signal to danger (red) and isolates the section to stop trains

SRV4 Servo Controller (4-channel) 12v dc Allows the final section toThe BLOCKsignalling Smart ServoSwitch SRV4 is designed to operate up to four servos, moving each one smoothly between its preset start and stop positions whenever a control input is activated. It provides a flexible and reliable solution for controlling servos used in points, signals, and other layout mechanisms. All key parameters for each servo, including start position, stop position, and movement speed, are easily adjusted using the built in