The Allen-Bradley 871L-D40EP40-N4 is a three-wire DC inductive proximity sensor with a 40 mm sensing distance and a 40 mm head, designed to detect metal targets without contact in automation environments. It provides a PNP (sourcing) output and is configured for either normally open or normally closed operation, with a standard DC barrel-style connector and an unshielded body. The device detects metal targets up to 40 mm away, enabling reliable position or limit sensing on equipment such as conveyors, presses, or automated assemblies.
