Schneider Electric XU1-P18PL9AB Photoelectric Sensor

The Schneider Electric XU1-P18PL9AB is a cylindrical M18 photoelectric sensor from the XU1 family, designed for non-contact object detection in industrial automation. It uses polarized reflex infrared sensing with a 3‑wire PNP normally open output, powered from 12–24 V DC and drawing up to 100 mA, with a cable connection. With IP65 and IP67 protection, it is built for harsh environments and commonly installed on packaging machines, conveyor lines, sorting systems, and automated handling equipment to detect presence or position of parts. Common replacements include XU1-P18PP340, XUB1APANL2, and XUB1APBNM12.