Allen-Bradley 871T-L5J18 Inductive Proximity Sensor

The Allen-Bradley 871T-L5J18 Inductive Proximity Sensor is a shielded, tubular metal detector designed to sense metal targets without contact in tight spaces. This 18 mm diameter sensor features a stainless‑steel barrel and a plastic face, combining durability with a compact footprint for mounting in confined locations. It runs on a 3‑wire DC supply from 10 to 30 V and delivers a PNP normally open (NO) switch output via a Mini QD connector, making it easy to wire into standard control circuits. With a 5 mm sensing distance, it detects metal objects within close range while resisting non‑metal interference, a common requirement in automated lines, conveyors, feeders, and end‑of‑travel sensing. The 871T series is widely used in factory automation for position sensing and machine monitoring, offering a robust, long‑life sensing solution where metal presence must be confirmed without physical contact. Applications include part presence detection on assemblies, conveyor stop/start interlocks, safeguarding interfaces on automated equipment, and general metal detection tasks in packaging, material handling, and manufacturing environments.