Allen-Bradley 42GDR-9000-QD Industrial IO Module

The Allen-Bradley 42GDR-9000-QD is a 9000 Series PhotoSwitch photoelectric sensor from Rockwell Automation, built for fast, reliable object detection on industrial production lines. It uses a 4-pin micro Quick Disconnect (QD) connection for quick wiring and field replacement, reducing downtime during maintenance. The device operates from a 10–30 V DC supply and provides an NPN/PNP output option with a maximum load current of 250 mA, paired with a rapid sensing response that commonly reaches around 2 milliseconds. As part of the 9000 General Purpose Sensor family, the 42GDR-9000-QD is designed to be used with standard Rockwell accessories and interfaces directly with typical PLCs in Rockwell's ecosystem, enabling straightforward integration into conveyors, packaging machines, and assembly cells. The QD variant's plug-and-play wiring supports rapid swaps in busy environments, supporting reliable detection of parts and features with minimal setup and calibration.