Features: Experience efficient motor control with our 150W/500W motor speed controller, featuring advanced technology to reduce heat, enhances efficiency, extend motor lifespans,for highly power applications. This encoders supported motor controller offer precise speed and position control, adjustable duty cycle for flexible speed adjustment, multiple frequency settings from 1KHz to 99KHz, with LED digital display for real time monitoring. Designed for engineers, enthusiasts, and professional in automation, robotics, and industrial sectors who need reliability and accurate motor control solution. Ideal for use in machines, conveyor systems, and robotic arms where high precise speed regulation and compact installation in tight spaces are essential. The built in switching control ensures easy operate for quick start stop functions, while the durability construction provides long lasting performances in demanding environments. Specifications: Component: ABS, PCB Size:Approx.79x43x26mm Option Type:150W,500W; 150W: Working voltages: DC5V~30V Rate current: 5A, 15A (most) most power: 150W Working frequency: 1KHz~99KHz adjustable, 1KHz step default frequency 20KHz, accuracy of about 1% 500W: Working voltages: DC9V~60V Rate current: 12A, 20A (most) most power: 500W Working frequency: 1KHz~99KHz adjustable, 1KHz step default frequency 20KHz, accuracy of about 1% Package Includes: 1pc Motor 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.