1、Automatic Adjustment Technology: The stepper motor driver supports automatic adjustment technology, allowing you to work more efficiently in the process of use. 2、Multiple Protection: This stepper motor driver has short circuit protection , over voltage protection, over current protection and short circuit loop protection, making the environment of use safe and more stable. 3、Low Noise and Vibration: Using powerful control algorithm, it greatly reduces the noise and vibration when the motor is running, low noise, low vibration and low temperature rise. 4、Spontaneous Pulse: This stepper motor driver also comes with spontaneous pulse and potentiometer speed regulation, suitable for 3D printers and engraving machines. 5、Easy to Install: This stepper motor driver is very easy to install, just follow the regular installation process and you can easily install it successfully. 1 x Stepper Motor Driver  Item Type: Stepper Motor DriverMaterial: Aluminum, PCBColor: BlackUse: For 3D printers, engraving machines, etc.