DC speed control, enclosure chassis, max. Amps 2, voltage output 0 to 90/180Vdc, speed range 25: 1, rotation reversible, 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.