Allen-Bradley 871TM-BH5N18-H2 Inductive Proximity Sensor

The Allen-Bradley 871TM-BH5N18-H2 is a metal-face inductive proximity sensor with an 18 mm stainless-steel tubular housing and shielded construction designed for durable non-contact metal detection in harsh environments. It operates on a 2-wire AC/DC supply for PLC interfacing and provides a normally open (NO) output, with a 5 mm nominal sensing distance that suits compact sensing needs. The rugged metal face and stainless-steel body tolerate vibration, dust, and routine industrial cleaning, while the 18 mm diameter supports mounting in tight spaces across conveyors, presses, and work cells. As part of Allen-Bradley's 871TM family, this sensor is intended for inline position sensing and metal-detection tasks where precise, contact-free switching of control logic is required; the NO output closes the circuit when a metal target enters the sensing range.