The 123-3D Stepstick DS26LV31T Differential Line Driver (v1.0) is a reliable stepper motor driver that controls external stepper motors. This driver is easy to use and compatible with RS-422. When you use this Stepstick, the step and dir outputs alternate between -5V and +5V. This significantly reduces the chance of interruptions and ensures reliable performance over long distances. The board is Pololu compatible, so you can easily use it together with Megatronics and Ultratronics.