Fangrui Product Details Promotional 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 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 Range Of Working Modes To Choose Two Modes, Automatic Or Manual. 13 Menu Setting Functions: Stepper Motor Controller Includes Cycle Number, Motor Turn, Delay Time, Number Of Pulses, Forward Speed, Flip Speed, Etc. External Buttons And Rotary Encoders Make Setting Parameters Very Simple. Color:photo Color Material:plastic Package Contents: 1 X Controller 1 X Plug Wire Only The Above Package Content, Other Products Are Not Included. Note: Light Reflection And Different Displays May Cause The Color Of The Item In The Picture A Little Different From The Real Thing. The Measurement Allowed Error Is +/- 1-3cm.