RA-SMC02 Stepper Motor Driver Controller Integrated Board for Forward/Reverse Pulse Speed Angle Control Module for 42 Controller & Driver: Integrated step motor controller and driver functions. Realizes motor operation and enables real-time control of the stepper motor's working state. Forward & Reverse: Change rotation direction via button or potentiometer. Automatically switches direction through working modes for versatile applications. 4 Control Modes: Operates using built-in parameters, external buttons, other drivers, or UART commands. 9 Work States: Features 9 default workflow programs covering common applications including forward, reverse, delay, loop, self-locking, non-lock, and rotating speed control. HD LCD Display: Clear display of speed, delay, and cycle times for easy parameter browsing and setting. Supports high-precision motor control with memory retention. Color: As shown in photo Material: ABS Size: 79 x 43 x 41mm Package Contents: 1 x Stepper Motor Driver Controller Note: Light reflection and different displays may cause slight color variations between the image and actual item. Measurement tolerance: +/- 1-3cm.