Description ULN2003 is a high voltage and high current Darlington transistor array products with high current gain high operating voltage wide temperature range with strong load capacity and other characteristics adapted to the requirements of various types of the high speed high power drive system Features 1 Using ULN2003 high power Darlington chip driven stepper motor2 Increased output expansion interface 3 A B C D light emitting diode instructions four phase stepper motor work with the state of the standard stepper motor interface can be used directly plug Package includes 1 x ULN2003 Stepper Motor Driver