Description: Using high-quality materials, high-power FET, the load current up to 10A With a fuse to prevent short-circuit high current, causing burnout protection With reverse power protection, to prevent damage to the module when the power is reversed Original 63V / 1000uF, large capacitor, to ensure the stability of the module Potentiometers are equipped with nuts, you can use without adding other components Specification: Material: PCB Circuit Board Size: Approx. 7.5x6x2.8cm/ 2.95x2.36x1.10 inch; Hole: Approx. 4.49x4.49cm/1.77x1.77 inch; Hole's Diameter: Approx. 0.32 cm/0.13 inch Working Voltage: DC 12V - DC 40V Control Power: 0.01 - 400W Static Current: 0.02 A ( Standby ) PWM Duty Cycle: 10% -100% PWM Frequency: 13 KHz Potentiometer can be removed, replaced by an external cable, the interface is ready Package Includes: 1 Piece Motor Speed Controller