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. Onboard printed instructions — intuitive operation without external guidance. 5. Features a thick, closely finned heatsink for effective heat dissipation. Working voltage: DC 10V–35V. Recommended power supply: switching power supply, DC 24V. Uses the Toshiba TB6560AHQ driver IC with built-in low-voltage shutdown, thermal shutdown, and overcurrent protection. Rated maximum output: ±3A; peak output: 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 accessories. Note: Slight variations in appearance, color, or silkscreen between batches may occur — these do not affect functionality or performance. Before powering on, carefully verify all wiring connections. Incorrect wiring may damage the driver IC. Do not set the current limit above the motor’s rated current.