DC 9-42V power supply; 12-30V power supply is recommended Control signal input voltage: 3.3–24V (universal, no series resistor required) Microstepping resolution: 1–32 steps (selectable) Output peak current: 4.0A H-bridge bipolar constant-current drive Upgraded version of TB6600, suitable for two-phase hybrid stepper motors (NEMA 23/57 and NEMA 17/42) with phase current up to 4.0A Microstep settings: 1, 2, 2A, 2B, 4, 8, 16, 32 (via 6-bit DIP switch) Output current adjustment: 8 levels (0.5A, 1.0A, 1.5A, 2.0A, 2.5A, 2.8A, 3.0A, 3.5A) Commonly used in small-to-medium 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 NEMA 23 (57mm) and NEMA 17 (42mm) stepper motors with holding torque up to 1.8 N·m Features: 1. High-speed optocoupler isolation for input signals 2. Built-in thermal and overcurrent protection 3. Automatic half-current mode to reduce heat generation 4. Motor noise optimization Note: Product design and 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: Other accessories are not included. Color representation may vary slightly due to monitor settings and lighting conditions. Measurement tolerance: ±1–3 cm.