Allen-Bradley 871TM-B2N12-A2 is an inductive proximity switch in the 871TM family, designed for non-contact detection of metallic targets in industrial automation. It operates on a wide input range of 40–250 V and provides a normally open (NO) output, enabling simple wiring into control circuits. The sensor specifies a nominal sensing distance of 2 mm, allowing short-range position and presence sensing in compact installations. As part of Rockwell Automation's 871TM line, it is built for rugged industrial environments and is compatible with standard mounting and accessory options used in AC/DC sensor applications.
