The SICK WL9-3P2462 is a compact retro-reflective photoelectric sensor with autocollimation optics, delivering reliable object detection at very short distances up to 0.4 meters. Equipped with a visible red PinPoint LED and a teach-in button for simple configuration, it features PNP light/dark switching, fast performance in a rugged VISTAL™ housing, and a convenient M12 four-pin connector.