Fangrui Product Details Various Functions: The Stepper Motor Controller Can Adjust The Angle, Speed, Direction And Delay Time Of The Motor. The Micro-stepping Resolution Can Reach 1/128, Allowing You To Control The Motor More Accurately. 9 Operating States: The Stepper Motor Controller Has Built-in 9 Fixed Operating Modes, Including Forward Rotation, Reverse Rotation, Delay, Cycle, Etc., Which Can Select The Operating Mode Faster. In Addition To The Built-in Parameter Working Mode, You Can Also Control It Through External Buttons Or Other Drives. [high-definition Lcd Display] The Stepper Motor Controller Is Equipped With A High-definition Lcd Display, Which Can Easily Read Parameters And Set Various Parameters More Accurately. The Module Also Has A Power Failure Memory Function To Prevent Your Parameters From Being Lost. Forward And Reverse Rotation: The Stepper Motor Controller Can Change The Direction Of Motor Rotation By Pressing A Button, And You Can Also Choose To Use A Wider Range Of Working Modes To Choose Two Modes, Aut