Rational 42.00.250 A10 F1 F2 4AT IO201013941 Input Output Module Circuit Board is an I/O expansion circuit board designed for use with compatible Rational automation controllers. It carries the part number IO201013941 and the model designation 42.00.250, with revision identifiers A10, F1 and F2, indicating its family and interface configuration. As a plug‑in input/output module, it provides a dedicated interface between external sensors and actuators and the Rational controller, enabling bidirectional signal exchange for automated processes.
