1.5 mm shielded sensing in an M18 barrel
The Omron E2EL-X1R5F1-M1 is a shielded inductive proximity sensor in a threaded M18 barrel, rated for 1.5 mm sensing distance on mild steel. That 1.5 mm is the flush-mount figure — shielded construction means you can embed it in a steel bracket without derating the sensing range, which is the main reason you'd pick this over an unshielded variant. Output is PNP normally open, so it switches positive on detection — common for PLC digital inputs that sink to common. The M12 4-pin connector mates with standard cordsets, making swap-out on a live line a five-minute job.
The 1.5 mm sensing distance is tight — this is a short-range sensor for detecting small features like cam lobes, valve stems, or thin targets where you need the sensor flush with the mounting surface. Shielded construction lets you gang multiple sensors in a tight pattern without cross-talk, which matters on a multi-station transfer line. PNP NO output and M12 4-pin connector are standard for 24 VDC control systems. The normally-open configuration means the output goes high when metal enters the detection zone — the default fail-safe state for most safety-related presence detection is NO, so this fits that pattern.
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