Description: This is a simple and easytouse DC motor speed controller of elegant appearance and stable performance. It is made with high quality circuit board which ensures a longer service life. The input voltage can be DC 10V to 55V. This speed controller with high power allowssetting rotationdirection. Feature: Speed controller ismade with high quality circuit board which ensures a longer service life. This simple and easytouse DC motor speed controller has an elegant appearance and stable performance. Well design case can protect the controller board from damage as well as dissipate heat. Designed with a digit display that shows the rate in percent of actual speed to maximum speed. This motor speed controller would allow setting direction of rotation that accomplishes reversing the motor's direction. Spec: Input Voltage:DC10V55V Output Voltage: Linear with load Max. Current: 60A Continuous Current: 40A Speed Range: 0% to 100% Forward & Reverse: Support RegulationMethod: Potentiometer(linear) Regulation Type: Regulating Current Control Frequency: 15KHz Wiring Type: Screw terminal Rotary Knob: 100K(with switch) Suitable for: Brushed DC motor Size: 100 x 76 x 28mm / 3.93 x 2.99 x 1.1 Package Includes: 1 xSpeed Controller