DITOP&reg; DC Motor Speed Control Controller 10-50V 40A 2000W, 240Hz/2.2kHz/22kHz PWM Frequency, 5%-100% Duty Cycle Adjustable Input supply voltage: DC 10V-50V. The maximum output power: 2000W The operation environment temperature is -20C to 40C. An appropriately rated fuse (rated a little hi The maximum continuous output current is 30A. The overload and short circuit protecting current is 4 NOTE: It can NOT be used to the BRUSHLESS motor. The controller is NOT reverse-polarity protected an PWM frequency: 240Hz, 2.2kHz, 22kHz. Duty cycle adjustable: 5%-100%