DC9-50V 2000W 40A PWM HOO DC Motor Speed Controller Speed Regulator Adjustable Switch New of 9-50V 40A Motor Pump Speed Controller High reliability. High efficiency, high torque, low heat Control and adjust speed of a motor with this controller Thickened copper sheet and PCB balanced arrangement of heavy current Light weight, heavy current, wide voltage output of speed controller is which will not damage governor. applied voltage is 9-50V. Adopt imported special speed drive IC. Thickened copper sheet and PCB balanced arrangement of heavy current make output of PWM high-efficient. Specification: Package size: 20 * 14.7 * 4cm / 7.87 * 5.79 * 1.57in(L * W * H) PWM duty cycle: 5%-100% PWM frequency: 12khz Quiescent current: 0.025A Item weight: Approx. 137g / 4.83oz Operating voltage: DC10V-50V Item size: 12.2 * 5.5 * 3.8cm / 4.8 * 2.17 * 1.5in(L * W * H) Material: Metal & Working Temperature: -20-40 Package weight: 138g / 4.87oz Controlled : 0.01-2000W Note: package without user manual. Package list: 1 * PWM Motor Speed Regulator Controller Switch Thickened copper sheet and PCB balanced arrangement of heavy current High reliability. High efficiency, high torque, low heat generation New generation of 9-50V 40A DC Motor Pump Speed Controller Light weight, heavy current, wide voltage Control and adjust the speed of a DC motor with this controller