1) Working voltage DC 10V-35V. It is recommended to use a switching power supply DC24V for power supply. 2) Adopt 6N137 high-speed optical coupler to ensure high speed without losing steps. 3) Adopt TB6560AHQ chip, which has low voltage shutdown, overheat parking and overcurrent protection circuits to ensure performance. 4) Rated output: ±3A, peak 3.5A. 5) Suitable for two-phase/four-phase/four-wire/six-wire stepper motors within 42, 57 steps of 3A, not suitable for stepper motors exceeding 3A.<br><br>6) Automatic half-current function. 7) Subdivision: full step, half step, 1/8 step, 1/16 step, 16 subdivision. Colour:green Material:PCB Due to different batches, there may be differences in product appearance and printed text, which will not affect use<br><br>Package Contents: 1 * TB6560 Stepper Motor Driver Board