DC 9–42V power supply; 12–30V power supply is recommended Control signal input voltage: 3.3–24V (no series resistor required) Subdivision accuracy: 1–32 steps (selectable) Output current: up to 4.0A H-bridge bipolar constant-current drive Upgraded version of TB6600 driver, suitable for 57 and 42-series two-phase hybrid stepper motors with phase current ≤ 4.0A Seven subdivision settings (1, 2, 2A, 2B, 4, 8, 16, 32) via 6-bit DIP switch Eight output current settings (0.5A, 1.0A, 1.5A, 2.0A, 2.5A, 2.8A, 3.0A, 3.5A) Commonly used in small- to medium-sized automation equipment and machinery, including engraving machines, marking machines, cutting machines, laser typesetting systems, plotters, CNC machines, crystal grinding machines, and automated assembly equipment Optimized for 57 and 42 stepper motors with holding torque ≤ 1.8 N·m Features: 1. High-speed optocoupler isolation for input signals 2. Built-in thermal and overcurrent protection 3. Automatic half-step current reduction to minimize heat generation 4. Motor noise optimization Note: Product design or appearance may vary slightly between batches due to ongoing improvements. Such variations do not affect functionality. Color: As shown Material: ABS Package includes: 1 × Stepper motor driver Note: This listing includes only the item specified above. Accessories and other products shown are not included. Note: Color representation may vary slightly due to lighting conditions and display settings. Dimensional tolerance: ±1–3 cm.