... . Output current:2~6A3. Mircostepping:1(1.8º),1/2,1/4,1/8,1/16,1/32,1/64,1/128 ... :Temperature-15~40°C Humidity<90%.I/O Ports:1.AC,AC:AC power positive pole 24V~55V ACNote:Must guard against exceeding ... 55V AC, so as not to damage the module2.GND:DC power ... is a mistake . CW6060AC Stepping motor driver, current 2A-6A, AC voltage input 24Vac~55Vac