ITEM NAME:Reversible DC Speed Controller 12V 24V 36V 48V 60V Motor Driver PWM Controller Product Description Description: Specifications: Input voltage: DC9-60V Output voltage: Linear load Output current: 0-20A Continuous power: 12600W Speed regulating type: adjust flow Speed mode: potentiometer (linear) Speed range: 0-100% Control frequency: 25KHZ Forward reversal: support Suitable for motor: DC brush Potentiometer mounting hole: 7mm Product size: approx. 92*50*36mm/3.62*1.96*1.41'' Net weight: approx. 145g Center distance: approx. 104mm Note: Please allow 1-3mm differs due to manual measurement. Due to the different display and different light, the picture may not reflect the actual color of the item. Thanks for your understanding. Included: 1 x PWM Controller.Speed regulating type: adjust flow. Suitable for motor: DC brush. Speed range: 0-100%. If item is defective after 3 months, you can still send it back to us. We will send you a new one after receiving the defective item.