The E2E-S04SR8-WC-B1 is a 4 mm shielded proximity sensor from Omron, sensing at 0.8 mm. PNP normally open output, pre-wired with PVC cable. It's a mature part – stable supply, typical lead time inside two weeks.
What the key specs mean for fit
The 4 mm threaded SUS case fits into tight spaces – think M4 mounting hole, small actuator detection. Shielded construction means you can flush-mount it in metal without derating the 0.8 mm sensing range. That range is close: it catches a passing screw head or a thin metal flag, not a pallet. PNP NO output mates with sinking PLC inputs common in Japanese and European control systems.