["This product has been fully tested, and has been applied to the engraving machine, patches and other equipment, quality assurance, ease of use.\n \n1) Working voltage for DC 10V-35V. DC24V switching power supply is recommended.\n2) the use of high-speed optical coupling 6N137, ensure high speed without losing step.\n3) for TB6560AHQ new original chip, there are low-pressure shut-off, overheating parking and over-current for protection circuit to ensure for optimum performance.\n4) The maximum rated output: ± 3A\n5) for 42, 57 3A stepper within two-phase / four-phase / four-wire / six-wire stepper motor is not suitable for more than 3A stepper motor.\n6) automatic semi-flow function.\n7) Subdivision: full step, half step, step 1/8, 1/16-step, 1/32-step,up to 32 segments.\n8) Volume: Width Length 75 * 50 * high 35 (MM)\n\n Similar products in features:\n1, the current level by adjustable to meet your various application requirements.\n2, semi-automatic adjustable flow.\n3, using high-speed optical coupling 6N137, ensure high speed without losing step.\n4, plate printing setup instructions, can operate without manual."]