Allen-Bradley 871TM-BH4N12-AZ Temperature Module

Allen-Bradley 871TM-BH4N12-AZ is a metal-face inductive proximity sensor in Rockwell Automation’s 871TM family. It uses an 18 mm metal housing designed for rugged industrial sensing of metal targets without contact, commonly used for position and end-of-travel sensing on automation equipment. The BH4N12 designation identifies the specific family variant in the 871TM line; related models are documented with a -25 to +70 °C operating temperature range, indicating suitability for a wide range of factory environments. Inductive proximity sensing provides fast, non-contact switching and is well-suited for environments where dirt or oil can affect mechanical switches. These sensors are typically mounted in machine frames or near moving parts to detect metal targets as they pass by, enabling precise timing and coordination with control systems in conveyor, packaging, and assembly applications. For designers and integrators, 871TM BH4N12 models are built to integrate with Allen-Bradley control architectures and can be selected to fit the appropriate installation and electrical configurations.