[Controller & Driver] Integrated stepper motor controller and driver functions. It can not only drive the motor but also control the working state of the stepper motor in real time. [Forward & Reverse] Rotation direction can be changed by button or potentiometer. It can also automatically change direction through the working mode to support multiple scenarios and applications. [4 Control Modes] In addition to built-in parameter work modes, it can be controlled via external buttons, other drivers, or UART commands. [9 Work States] Built-in 9 default workflow programs, covering most applications. Functions include forward, reverse, delay, loop, self-locking, no-lock, and speed control. [HD LCD Display] The 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 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 display differences may cause slight color variations between the image and the actual item. Measurement error allowed is +/- 1-3cm.