Description: This is a simple and easy-to-use DC motor speed controller of elegant appearance and stable performance. It is manufactured with high quality printed circuit board which ensures a longer lifespan. The input voltage can be DC 10V to 55V. This speed controller with high power allows rotation direction adjustment. Features: The speed controller is manufactured with high quality circuit board which ensures a longer service life. This simple and easy-to-use DC motor speed controller has elegant appearance and stable performance. The well-designed case can protect the controller board from damage and dissipate heat. Designed with a digital display that shows the percentage rate from actual speed to maximum speed. This motor speed controller would adjust the direction of rotation which accomplishes the reversal of the motor direction. Specifications: Input voltage: DC10V-55V Output voltage: linear with Max. load Current: 60A Continuous current: 40A Speed range: 0% to 100% Forward Reverse: support Regulation Method: Potentiometer (linear) Regulation type: Current regulation Control frequency: 15KHz Wiring type: screw terminal Rotary knob: 100K (with switch) Size: 110 x 78 x 38mm/4.33 x 3.07 x 1.49" Package includes: 1 times Cruise control