This video demonstrates how to control a Kadee® Servo Controller with a BlueRail board to operate a large scale Kadee coupler with battery power. The BlueRail board can control up to 4 Kadee® Servo Controllers. Kadee® Servo Controllers can control Kadee® RC Remote Couplers (factory programmed), turnouts, crossing gates, semaphores, windmills, water wheels, gondolas, trams, roundabouts, cranes, & drawbridges. Below is a diagram depicting how to make the connection. Click image to download PDF.