Allen-Bradley 871C-D8B18 Inductive Proximity Sensor

Allen-Bradley 871C-D8B18 is a compact tubular inductive proximity sensor from Rockwell Automation’s 871C family, designed for reliable, non-contact detection of metal targets in tight spaces where conventional switches won’t fit. This AC-powered model operates on 24 to 250 VAC and is intended for integration with standard industrial control systems, providing a simple signal input to PLCs and other controllers without a separate DC supply. The 871C family is known for its miniature tubular form factor and rugged performance in harsh environments, with the D8B18 configuration representing a specific Rockwell-defined electrical and sensing setup within the series. Inductive proximity sensors in this class detect metal objects through electromagnetic fields, offering wear-free operation and long service life, making the 871C-D8B18 a practical choice for position sensing on conveyors, automated tooling, and compact machinery where space is limited.