The completely solid state MCS-203 dancer control module is designed for automatic web tensioning through the use of a dancer roll. The MCS-203 Can control two 24 VDC tension brakes in parallel. It works on the concept of a PID controller and has internal P, I and D adjustments for optimum performance regardless of brake size. Warner Electric® Dancer Control Module, Closed Loop MCS-203, 24 to 28 VDC Input, 0 to 24 VDC Output, For Use With: 24 V Electric Clutches/Brake, TB, ATTB and ATTC Series and Magnetic Particle Clutches/Brakes, 3 A Input Current, -20 to 113 deg F Ambient Temperature