Feature:1. Power Off Memory: Comes with power off memory function, the motor controller adds more convenience to the operation.2. Adjustable Speed: From 0.1 RPM to 999 RPM, the rotational speed is free and easy to adjust to meet your working needs.3. Various Function: The step motor driver also enables simple adjustment on angle, distance and delay, very practical.4. Safe Application: Ensuring reliable and efficient performance, the control module suits for 42 and 57 step motors.5. Easy Maintenance: Digital display makes the adjusting much easier, and the installation and maintenance are very easy.How to Use:Interface Instruction:1. DC+ DC‑: Connect to DC 8V~24V power supply; 2. PU L: Connect to the pulse direction of driver; 3. D I R: Connect to the direction end of the driver; 4. E N: Connect to the enable end of the driver; 5. GND: Connect to the negative electrode public end of the driver; 6. P‑‑1: Jog: Turn when the signal is given, and stop when the signal disappears; 7. P‑‑2: Self Locking: Turn when the signal is given, and stop when the signal is given again; 8. P‑‑3: Give CW rotation signal, CW rotates for A distance and stops; give CCW rotation signal, CCW rotates for B distance and stops, and the CW rotation and CCW rot