As the SIGM20 is designed to operate low voltage LED’s, devices with higher power consumption – or reversible drive - such as the Tortoise™ point motor require a relay to switch the power from the 12v supply to/from the SIGM20.
GFB Designs can supply the RLY2 board which serves this purpose and should be wired as indicated below to control semaphore signals using the Tortoise™ slow motion point motor.
The connections from the SIGM20 to the tortoise point motors using the RLY2 relay board is shown in the attached technical note (TN-SIGM20-001).
