This motor speed controller features two low internal resistance MOSFETs and a dedicated driver stage, delivering enhanced performance, stability, high current handling, and high-frequency operation. It includes a start-stop button and supports external switch control for flexible integration. The controller allows user-defined settings for minimum speed, maximum speed, and operating frequency—enabling customization based on motor or LED specifications. Minimum speed setting prevents motor stall or LED failure at low values; maximum speed setting prevents excessive motor speed or LED over-brightness. Speed adjustment is performed via a digital encoder knob, offering higher precision, better consistency, and no drift compared to standard potentiometers. Adjustment step size is configurable from 0.1 to 25, supporting both fine and coarse speed control. Start and stop times can be set from 0.0 to 9.9 seconds, enabling soft-start functionality to eliminate inrush current and protect the motor, thereby extending its service life. The PWM motor speed controller is housed in a standard 5135 instrument case with back cover for easy mounting. Material: ABS + electronic components Color: Black Package Contents: 1 x Motor Speed Controller Note: Color appearance may vary slightly due to lighting and screen settings. Measurement tolerance: ±1–3 cm.