Omron E2K-X8MY2 is a capacitive proximity sensor in an M18 threaded body, unshielded, normally-closed output on a 2-wire AC supply. Rated for 100 to 220 VAC, it switches the line directly – no separate DC supply needed. The 2 m PVC cable keeps the connection simple for panel runs or direct conduit. If you're replacing a sensor where a 2-wire AC NC device fits, this one works without recalibrating the load it drives. Mounting uses an M18x1 threaded hole or an 18 mm bracket; the heat-resistant ABS case (listed as heat-resistant ABS) means it holds up in moderate ambient temperature zones—good for tanks, hoppers, or liquid-level detection through non-metallic walls. Unshielded construction gives you a sensing field that reaches out sideways, so consider spacing from surrounding metal when setting it on a bracket.
If you're cross-shopping the E2K-C25MY2-US (34 mm, unshielded, same output type), the main difference is physical footprint. The E2K-X8MY2 uses the common M18 body—fits where a 34 mm barrel won't, and the bracket is an 18 mm hole, not a 34 mm one. Both are 2-wire AC, normally-closed, unshielded, and operate on 100 to 220 VAC. If the panel was cut for M18, the X8MY2 drops in without reworking the bracket; the C25MY2-US would need the larger hole. Electrical wiring is identical—series with the load.