The Omron E2E-X3D1-M1J-T 0.3M is a shielded inductive proximity switch from the E2E/E2E NEXT series. You get a 3 mm sensing range, normally open output, and a DC 2-wire configuration that eliminates polarity worries. The 0.3-meter M12 pre-wired cable with PVC jacket keeps installation fast—just strip, land, and torque. Sensing distance is short, so target repeatability is tight; shielded construction lets you flush-mount in metal without derating.
What this sensor is for
Shielded inductive proximity sensors like this one are the standard pick for metal part detection in automation lines — conveyor dog positions, cylinder extension confirm, tool changer pockets. The 3 mm range suits close-up mount where the target passes within a few millimeters. No polarity on the DC supply simplifies connection to PLC inputs without worrying about line reverses.