DC Speed Control, Enclosure Chassis, Max. Amps 2, Voltage Output 0 to 90/180VDC, Speed Range 25:1, Rotation Reversable, External Switches CW/CCW, AC Input Voltage 120/240VAC, DC Speed Control SCR, HP @ Lower Volts 1/50 to 1/6, HP @ Higher Volts 1/25 to 1/3, Linear Acceleration Fixed 0.5 sec., Current/Torque Limit None, Speed Regulation +/-1 Percent of Motor Base Speed, Shunt Wound Volts 100/200VDC, Accepts Tach Feedback No, Dynamic Braking No, Power On Light No, IR Compensation Adjustable