1、High performance, low price, low noise and perfect stability. 2、Provides 16 kinds of microstep selection,resolution can be set to 60000pulse/rev. 3、Once the pulse stops for 100ms,the phase current will automatically reduce to 20%-80%(It can be set by STOP/Im as show as below). 4、Phase memorize(Notes:Once the pulse stops for 5s or more,the Driver will memorize current phases automatically so that it can be resume after restart or MF signal changes from valid to invalid. 5、Photocoupler isolated input/output. Feature: High performance, low price, low noise and perfect stability. Provides 16 kinds of microstep selection,resolution can be set to 60000pulse/rev. Once the pulse stops for 100ms,the phase current will automatically reduce to 20%-80%(It can be set by STOP/Im as show as below). Bipolar constant current chopper control. Photocoupler isolated input/output. Adjustable drive current divided into 16 grades range from 0.7A/phase-7A/phase. Phase memorize(Notes:Once the pulse stops for 5s or more,the Driver will memorize current phases automatically so that it can be resume after restart or MF signal changes from valid to invalid. Specification: Model: YKC3722MA Impulse response frequency: 200Kpps (Highest) Single phase power supply input voltage: AC 110V-220V Protection function: Overheat, overcurrent, undervoltage protection Package list: 1 * Motor driver 1 * Terminal and screw(set) Note: The actual product color may deviate from the photo due to light. There may be a slight deviation in the measurement of product.