1. The current level can be adjusted step by step to meet various application needs. 2. Automatic half-step adjustable. 3. Uses a 6N137 high-speed optocoupler for high-speed synchronization. 4. Clear silkscreen markings on the PCB—no manual required for basic operation. 5. Features a thick, finned heatsink for effective heat dissipation. Working voltage: DC 10V–35V. Recommended power supply: switching DC 24V. Uses Toshiba TB6560AHQ driver IC with built-in low-voltage shutdown, thermal shutdown, and overcurrent protection. Rated maximum output current: ±3A; peak current: 3.5A. Compatible with two-phase, four-phase, four-wire, and six-wire stepper motors (NEMA 17/NEMA 23 size, up to 3A rated current). Not suitable for motors exceeding 3A. Automatic semi-step function. Microstepping modes: full step, half step, 1/8 step, 1/16 step (up to 16 microsteps per full step). Color: As shown. Material: PCB. Dimensions: Approx. 50 × 75 × 35 mm (W × L × H). Package includes: 1 x motor driver board (with standard mounting hardware). Note: Slight variations in appearance, color, or silkscreen between batches may occur—these do not affect performance or functionality. Always double-check wiring before powering on. Incorrect connections may damage the board. Do not set current higher than the motor’s rated current.