Lenze 431 Motor speed-controller board. THIS IS A GRADE 3 ITEM. Elevate the performance of your industrial automation systems with the Lenze 431 Motor Speed-Controller Board. A former leader in motion control technology, Lenze continues to offer reliable and precise solutions for regulating motor speeds with its robust range of speed control units. This particular model is manufactured in Germany, assuring quality and adherence to rigorous industrial standards. Ideal for a myriad of applications within the business, office, and industrial sectors, this board is a versatile addition to your motor control arsenal. Whether you’re looking to streamline processes or improve efficiency, the Lenze 431 board is engineered to deliver consistent results, ensuring your machinery operates at its optimal performance level. Grade 1 – New & Boxed. Grade 2 – new, tested, in working order and good condition and not in original packaging. Grade 3 – This is a used item and has been tested in working order and has slight cosmetic imperfections. Grade 4 – This is a used item it powers on, but we do not have the correct equipment to test further.