Operating voltage: 10V-55V Output voltage: Linear under load Input current: Require large than the motor operating current Output current: depend on load size Output current: 0-100A Continuous current: 60A Current at rest: 0.01A (standby) Maximum power: 3000 W (power = voltage * current) Motor Power control: 0.01-3000 W, 12 V: 720 W (max), 24 V: 1440 W (max), 36 V: 2160 W (max), 48 V: 2880 W (max), 50 V: 3000 W (max). Knob hole: 7mm Speed type: adjustable current Speed mode: ON / OFF linear potentiometer 270 degrees Speed range: 0% -100% Frequency control: 15 KHZ Speed Control: potentiometer (with switch) Knob Specifications: 100 K (with switch) Speed type: flow control Advance rotation: Support Digital positioning screen: 0-100 ( percentage) Board size: 120*96mm/4.72*3.78 inch Color: Green Material: Plastic Package Contents: 1 * Motor Speed Controller Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.