SICK WL9-3P3432 Photoelectric Sensor

SICK WL9-3P3432 is a compact retro-reflective photoelectric sensor from the W9 family (part number 1049067) designed for reliable object detection on automation lines. The rectangular housing measures 12.2 mm wide by 50 mm high by 23.6 mm deep and includes an M3 mounting hole for easy installation. It emits visible red light at 650 nm with a PinPoint LED indicator to show its status and provides a PNP output while powered by 10–30 V DC. With the PL80A reflector, the WL9-3P3432 achieves a sensing range up to 5 m, making it suitable for detecting parts on conveyors and in packaging applications; the unit also features a single teach-in button for straightforward setup. The light spot is roughly 45 mm in diameter at about 1.5 m, supporting stable detection of reflective targets in typical factory environments. The sensor is specified for long life, with an average service life of about 100,000 hours at 25°C. In practice, this model is well-suited for compact, high-contrast presence/detection tasks on small parts, where a reliable retro-reflective solution with a simple teaching procedure and a robust sensing range can improve throughput and accuracy on automation lines.