DC 9-42V power supply, compatible with 12-30V input Control signal input voltage: 3.3-24V universal (no external resistor required) Subdivision accuracy: 1-32 step resolution selectable Output current: 4.0A maximum H-bridge bipolar constant current drive technology Upgraded driver based on TB6600, suitable for 57mm and 42mm two-phase hybrid stepper motors with phase current up to 4.0A Features 7 selectable microstep modes (1, 1/2, 1/4, 1/8, 1/16, 1/32) via 6-bit DIP switch Adjustable output current with 8 levels (0.5A, 1.0A, 1.5A, 2.0A, 2.5A, 2.8A, 3.0A, 3.5A) Ideal for small to medium-sized automation equipment and machinery Common applications include engraving machines, marking machines, cutting machines, laser photoplotters, plotters, CNC machines, crystal grinding machines, and automated assembly systems Best suited for 57 and 42 type stepper motors with torque of 1.8N.m or less Key features: 1. High-speed optocoupler isolation on input signals 2. Built-in thermal protection and overcurrent protection 3. Automatic half-current mode to reduce heat 4. Motor noise reduction functionality Note: Product design may vary slightly between batches; minor differences in appearance or color may occur but do not affect performance Color: As shown in image Material: ABS Package Contents: 1 x Stepper Motor Driver Kit Note: Other items not included Note: Lighting and display settings may cause slight color variations between image and actual product. Measurement tolerance: +/- 1-3cm