Allen-Bradley 42RLU-4003B S82 Retroreflective Photoswitch

The Allen-Bradley 42RLU-4003B S82 Retroreflective Photoswitch is a heavy‑duty, long‑range retroreflective photoelectric sensor that detects targets up to 10.6 meters when used with a reflector. It runs from a 20 V DC control supply and consumes about 2 VA, delivering a relay‑type output via a screw‑terminal connection for straightforward integration into industrial control circuits. Occupying a compact footprint with a 79.4 mm diameter, 203.2 mm height, and 101.6 mm length, it features a 940 nm infrared emitter and is rated IP66/NEMA 4 for rugged environments, supporting standard retroreflective sensing with light/dark switching and a minimum reflector distance of 76 mm. This model is listed by Rockwell Automation as discontinued as of February 28, 2023.