Input Voltage: AC 220V. Suspension Current: 10A. Regulation Voltage: DC 10-210V. Wiring Type: Fence terminal. Output Voltage: Linear under load. Maximum Current: 20A. Speed Regulation Method: Potentiometer (linear). Knob Type: 500K with switch. PWM DC motor speed controller can be widely used in torsion control and variable speed applications.As long as the voltage applied to the brushed DC motor is changed, the speed of the brushed DC motor can be controlled.e applied to the brushed DC motor is changed, the speed of the brushed DC motor can be controlled. Practical Design: Our adjustable motor speed controller is compatible with 220V DC brushed motors and features a simple fence terminal wiring connection. Easy to Install: Our PWM DC motor speed controller is easy to install and operate, with no complicated setup required. High-Quality Performance: Our motor speed controller features a reliable high voltage regulator dimmer for precise and efficient motor speed control.