Omron E3FA-DP26 is a compact M18 cylindrical diffuse-reflective photoelectric sensor with plastic housing, infrared LED, 1 m sensing distance, PNP open-collector output, selectable Light-ON/Dark-ON, M12 connector, IP67/IP69K protection, one-turn sensitivity adjuster, 0.5 ms response time, orange operation indicator, green stability indicator, reverse polarity and short-circuit protection.OMRON Europe Industrial Automation