... ,1/2504.Protect form : Overheated protect, lock automatic half current ,error connect protect5.Dimensions:118mm×76mm× ... DIR-:Stepping motor direction input, voltage level touched off,high towards, low reverse7,ENA+,ENA-: motor free .NOTE ... thus would damage the driver seriously. The protecting circuit is within this driver, when users connect by ... motor driver,1.3A-4.5A,high quality and reasonable price