Through-beam sensing for discrete part detection
The Omron EE-SPX306-W2A 2M is a through-beam photoelectric sensor — the emitter and receiver are separate housings, so the sensing distance is set by the beam path between them, not by a reflective target. This configuration is specified when you need positive object presence detection across a defined gap, typical on conveyor lines, packaging machinery, or material handling gates where a reliable break-beam signal is required.