Model: ZK-SMC01 Step Motor Controller Adapted motor: steper motor Number of control axes: single axis Motor signal: common cathode Power supply range: DC 5-30V universal Instruction features: streamline and optimize multiple commonly used instructions Acceleration and deceleration control: Yes Input reverse connection protection: Yes Remote communication control: TTL serial port Main functions of the system: automatic, manual, setting, serial port control Speed range: 0.1~999 laps/minute Number of forward pulses: 1-9999 pulses Number of reverse pulses: 1-9999 pulses Cycle work times: 1-9999 times Forward delay time: 0.0-999.9 seconds Reversal delay time: 0.0-999.9 seconds Subdivision selection range: 1-128 subdivision Product use environment: -5Celsius-60Celsius (non-condensing) Colour:Black+blue Material:ABS Package Contents: 4 x Stepper motor controller 4 x Plug cord 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.