SRV4 Servo Controller (4-channel) 12v dc A compatible plug in power

A compatible plug in power supply can be purchased from the BLOCKsignalling website here

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

Allows signals to be forced to danger via an external input

Monitors trains entering and leaving a protected section of track

and similar layouts

SRV4 Servo Controller (4-channel) 12v dc A compatible plug in powerThe 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