Schneider Electric 042 703 542 is a digital output module for Modicon 170 PLC systems, enabling a controller to drive external devices through discrete on/off outputs. Also cataloged as AEG Modicon 170 bdo 356 00, this plug‑in module serves as an expansion I/O card within compatible Modicon 170 controllers. It provides the digital output channels needed to switch actuators, relays, or indicator devices in automation applications.
