The Allen-Bradley 1769-L24ER-QB1B is a Compact I/O module for Rockwell Automation's CompactLogix systems, providing digital input and output in a single, compact package. It is designed for use in Compact I/O racks to interface digital sensors and actuators within PLC-based automation projects. As part of the 1769 Compact I/O family, it helps extend the controller's digital I/O capability in a space-efficient form factor.
