Features: This direct current motor speed controller boasts wide input voltages ranges of 9V to 50V for versatile power compatibility and delivers a highly power output of up to 2000W, making it suitable for driving most direct current brushed motors in demanding applications. Featuring a current of 40A for consistent performances, it offer signals or knob based speed control for precise motor speed adjustments and incorporates built in overload, overheating, and short circuit protections for enhanced safety. Ideal for hobbyists, engineers, and industrial professional seeking reliability motor control solution for highly load projects like robotics, automation systems, or builds. Perfect for use in scenarios such as power tool, conveyor belts, electric vehicles, and industrial machinery where robust speed regulation and stable operate are essential. Crafted from durability ABS, this highly power motor driver ensures longevity and efficient operate in diverse environments, providing a dependable controller for seamless motor management. Specifications: Component: ABS. Size:Approx.9x5.1cm/3.54x2.01inch Option Type: built-in knob, external knob Working voltages: DC9V-50V Most current: 40A Output power: 0.01-2000W (most) Recommended use ranges: 12V250W; 24V350W; 36V400W; 48V500W Quiescent current: 0.025A Adjustment ranges: 5-100% Working temperature: -40℃~+85℃ Package Includes: 1pc Motor Speed Controller note: Please allow 1-3cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.