Allen-Bradley 22DJ3-4000 Function Module

The Allen-Bradley 22DJ3-4000 Photoswitch On-Off Function Module is a Series 4000 LED plug‑in control module that provides a dedicated ON/OFF output for Rockwell PhotoSwitch sensing bases. Designed to snap into compatible Series 4000 base assemblies, this Type 22DJ3 module conditions light-sensing events into a binary signal suitable for triggering downstream logic or actuators. As part of the Photoswitch family, the 22DJ3-4000 is positioned specifically for on/off control tasks in light-beam and reflective sensing setups, enabling straightforward integration in packaging lines, material handling, and other automated processes where discrete sensing states are required. The module supports quick insertion and removal in field installations, aligning with the Series 4000’s plug-in architecture for rapid maintenance within multi-module PhotoSwitch configurations. In essence, this device serves as the ON/OFF control module within Allen-Bradley’s Series 4000 LED plug-in control ecosystem, with its 22DJ3-4000 designation identifying its function and form factor for compatibility with matching base hardware and companion 4000-series components.