1Easily Turn On Or Off: You can easily turn on or turn off the controller through the power switch, simple to operate, very convenient 2Variable Knob Potentiometer: Stepless speed control switch uses variable knob potentiometer, possess high efficiency and large torsion 3Continuous Current: This controller can easily provide continuous current to your DC motor or other loads, using potentiometer speed regulation 4Energy Saving: Input voltage from DC660V, output current is 020A, energy saving with high performance, very practical 50100% Speed Adjustment Range: The speed adjustment range support 0100%, the control frequency is 15kHz, and the wiring uses barrier type terminals Item Type: PWM Motor Speed Controller Model: ES3 Output Current: 0-20A Speed Regulation Type: Flow regulation Speed Regulation Method: Potentiometer Support Motor: Brushed motor CW and CCW: Support Speed Adjustment Range: 0-100% Control Frequency: 15kHz Wiring Type: Barrier terminal block 1 x PWM Motor Speed Controller Have a great time shopping!