RA-SMC02 Stepper Motor Driver Controller Integrated Board Forward/Reverse Pulse Speed Angle Control Module for 42 [Controller & Driver] Integrated step motor controller and driver functions. It can realize motor control and manage the working state of the stepper motor in real time. [Forward & Reverse] Rotation direction can be changed by button or potentiometer. Automatically changes direction through the working mode to support multiple applications. [4 Control Modes] In addition to built-in parameter operation mode, it can also be controlled via external buttons, other drivers, or UART commands. [9 Work States] Built-in 9 default workflow programs covering most applications, meeting various scenario needs including forward, reverse, delay, loop, self-locking, no-lock, and rotating speed control. [HD LCD Display] HD LCD clearly displays speed, delay, and cycle times for easy browsing and parameter setting. Enables high-precision motor control. Parameters are saved with memory function. Color: As shown in photo Material: ABS Size: 79 x 43 x 41mm Package Contents: 1 x Stepper Motor Driver Controller Only the above package content is included; other items are not part of this package. Note: Light reflection and different displays may cause slight color variations between the image and actual item. Measurement error allowed within +/- 1-3cm.