Operating voltage: 10V-55VOutput voltage: Linear under loadInput current: Require large than the motor operating currentOutput current: depend on load sizeOutput current: 0-100AContinuous current: 60ACurrent 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: 7mmSpeed type: adjustable currentSpeed mode: ON / OFF linear potentiometer 270 degreesSpeed range: 0% -100%Frequency control: 15 KHZSpeed Control: potentiometer (with switch)Knob Specifications: 100 K (with switch)Speed type: flow controlAdvance rotation: SupportDigital positioning screen: 0-100 (full speed percentage)Board size: 120*96mm/4.72*3.78 inchColor: GreenMaterial: PlasticPackage Contents:3 * Motor Speed ControllerOnly 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.