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 x 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 (full speed percentage) Board size: 120x96mm/4.72x3.78 inch Note:Due to different factory batches, if some parts are slightly different, it will not affect the application. Colour:As Shown Material:Plastic Package Contents: 4 x Motor Speed Controller