The AIS-42SA-B is a servo drive module manufactured by Autonics. It is a 2-phase, bipolar, stepper motor with an encoder, rated at 60 watts. It has a built-in microstepping controller and a built-in 24Vdc energy-saving standby circuit. It has a wide range of adjustable speed and Torque, and a 200kHz maximum switching frequency. It is a widely used product in industrial automation applications, especially in applications that require high precision and reliability. It provides maximum protection with its built-in overload safety and temperature control. It also has a wide operating temperature range of -10°C to +50°C, is RoHS compliant, and comes with a two-year warranty.