Specification Brand : Automation Technology Inc. Label : Automation Technology Inc. Manufacturer : Automation Technology Inc. PartNumber : KL-5056D ProductGroup : Home Improvement ProductTypeName : HOME_LIGHTING_ACCESSORY Publisher : Automation Technology Inc. SmallImage_Height : 75 SmallImage_URL : https://m.media-amazon.com/images/I/51ULaJoWigL._SL75_.jpg SmallImage_Width : 75 Studio : Automation Technology Inc. Title : KL-5056E Digital Bipolar Stepper Motor Driver-32 bit DSP Based