... ,1/25,1/50,1/125,1/2504.Protect form : Overheated protect, lock automatic half current ,error ... +,DIR-:Stepping motor direction input, voltage level touched off,high towards, low reverse7,ENA+,ENA-: motor free .NOTE ... electrical machinery runs abnormally, shake , and output is small.Please check whether the wiring of electrical machinery is ... motor driver,1.3A-4.5A,high quality and reasonable price