Through-beam sensing with a 1M cable
The Omron EE-SX670P-WR 1M is a through-beam photoelectric sensor — the emitter and receiver are separate housings, so the sensing range is determined by the beam path between them, not by reflected light from the target. The "1M" suffix indicates a 1-meter cable, which simplifies wiring in tight panels where a pigtail saves a junction box.