Features: Supports DC5 24V input ranging for versatile small power motor applications. Ideal for diyer projects and industrial automation systems requiring flexible voltages adaptation, with 50W maximumly output power. Delivers accurate speed adjustment from 22,400 to 74,000RPM depending on motor poles (2/6/12/14 poles). Perfect for model building and lab testing scenarios demanding fine tuned operations. Measures just 34x27mm with optimized PCB materials for enhanced heat dissipation. Ensures stable performances during prolonged use in confined spaces like robotics and miniature machinery. Built in overcurrent and overvoltage safeguards protect motors up to 3A current. Secures equipment against unstable power conditions without additional accessories. Tool less setup simplifies integration into various devices. For standard BLDC motors, suitable for hobbyists and professional alike in toy/modification projects. Specifications: Component: PCB Working voltages: 6-20V (limit 5-24V) Maximumly speed: 22400RPM (2-poles motor), 74000RPM (6-poles motor), 40000RPM (12-poles motor), 35000RPM (14-poles motor) Parameters: Supports DC5~24V input voltages ranging, maximumly output power is 50W, suitable for low-power motor speed regulation applications. Size:Approx.34x27mm/1.33x1.06inch Package Includes: 1 Set Power Motor Speed Controller Board note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.