What you're getting with the E2E-C03SR8-CJ-B1 0.3M
The Omron E2E-C03SR8-CJ-B1 0.3M is a shielded 3mm diameter cylindrical proximity switch with a 0.8mm sensing distance, normally open PNP output, terminated in a 0.3m PVC pigtail with an M8 3-pin connector. Sized for tight mechanical envelopes – a 3mm smooth cylinder fits where M8 threaded heads won't. The 0.8mm shielded range picks up small ferrous targets at close standoff, so you can detect a 5mm gear tooth or a thin flag without false triggers from surrounding metal.
How it compares to the E2C-X1R5AH
The E2C-X1R5AH is a heat-resistance sensor head with an M8 brass thread, 1.5mm sensing distance, and a fixed 3m cable – no connector. This E2E unit is a smooth, unthreaded 3mm cylinder, half the sensing range, and terminated with a 0.3m cable and M8 connector.