Allen-Bradley 871TM-B8N18-H2 Inductive Proximity Sensor

The Allen‑Bradley 871TM‑B8N18‑H2 is an M18 threaded cylindrical inductive proximity sensor that detects metallic targets without contact, delivering reliable non‑contact switching for industrial automation applications such as conveyors, robotic cells, packaging lines, and assembly equipment. It operates on 10–30 VDC with a NPN normally open output capable of up to ~200 mA and a response frequency around 500 Hz, making it suitable for high‑speed sensing. Key specs include an 8 mm sensing distance, IP67 protection, a pre‑wired cable output, and an operating temperature range of –25 °C to +70 °C, plus a built‑in LED for status indication and threaded mounting for stable installation. Common replacements include Allen‑Bradley 871TM‑B8N18‑H1, Omron E2E‑X8ME1, and Pepperl+Fuchs NJ18‑18GK‑E2.