CNC Router Single 1 Axis 3A TB6560 Stepper Motor Driver Board Controller Kit Features: Working voltage DC 10V-35V. Recommended to use a switching power supply DC24V power supply. 6N137 high-speed optical coupling, guarantee high speed without losing step. Using the TB6560AHQ chip with low voltage shutdown, overheating stop and overcurrent protection circuit to ensure optimal performance. Rated maximum output: ± 3A, peak 3.5A. For two-phase within 42,57 stepping 3A / four-phase / of line four / six-wire stepper motor, and is not suitable for more than 3A stepper motor. Automatic half current function. Subdivision: whole step, half-step, step 1/8, 1/16 step, a maximum of 16 subdivisions. Specifications: Working voltage:DC 10-35V Rated maximum output: ± 3A, peak 3.5A. Main color:Green Size:75 x 50 x 33mm Net weight:83g Package weight:93g