Features: Driver capability up to 1.2A(RMS) continuous coil current. Supports Step/DIR interface and SPI interface two control modes. Combined maximum efficiency and optimum motor torque operation without noise. Reduce energy consumption by 75%. Thermal protection, over-current protection, and ground fault protection. Adjustable current control lets you set the maximum current output with a potentiometer, which lets you use voltages above your stepper motor's rated voltage to achieve higher step rates.