PS-FL3-PLB2-PHOTO SENSOR FLAT RETRO 1M PNP 20.The PS-FL3-PLB2-PHOTO SENSOR FLAT RETRO 1M PNP 20 is the go-to for precise industrial detection. Its flat form integrates neatly into any setup, and its 1-meter range and PNP output allow for quick and precise detection, maximizing productivity across a wide range of applications.