Omron E3R-5E4 Photoelectric Sensor Through-Beam is a through-beam photoelectric sensor from Omron's E3R family. In a through-beam arrangement, a separate emitter and receiver establish a light beam across the sensing path, and detection occurs when the beam is interrupted by an object. This configuration is commonly used for non-contact presence detection on automation lines, conveyors, and other equipment where a defined gap must be monitored. The E3R-5E4 designation identifies this specific model within Omron's through-beam sensor lineup.
