The AIS-D-42SA-B Stepper Motor Controller, manufactured by Autonics, is a 24VDC, 1.7A motor controller with a programming capability of PC and an IP 20 rating. This motor controller delivers up to 60 Watts of power, making it suitable for low-power applications. It is equipped with step and direction inputs and also offers sound-proof and vibration reducing operation. Its multiple protection functions include thermal shutdown, over-current protection, automatic idle current reduction and driven current variation. The user can select up to one of 32 microsteps, 8 segments and 4 auto tune levels to ensure smooth, precise and quiet operation.