Allen-Bradley 871TM-DH4NE12-D4 Inductive Proximity Sensor

Allen-Bradley 871TM-DH4NE12-D4 is a metal-face inductive proximity sensor engineered for durable metal-target sensing in tight spaces. It features a 12 mm diameter stainless-steel housing with a short tubular profile and a recessed metal face for rugged industrial use. The sensor provides a nominal 4 mm sensing distance and a normally open DC output in a 2-wire configuration with a Micro Quick Disconnect, typically configured as a sink (NPN) output. This unshielded device is commonly employed for position sensing on conveyors, machine frames, and other automation equipment where a compact, metal-face sensor is required. Rockwell Automation notes that metal-face inductive sensors in this line were discontinued as of June 24, 2024, with a functional replacement available in the 871C family, such as 871C-DH4M12-D4, which preserves the 12 mm diameter and 4 mm sensing distance while updating packaging and compatibility. When integrating, verify the load and wiring against the 2-wire DC sensor’s specifications and follow standard safety practices for your specific application and environment.