Small light barriers, W9, WSE9LC-3P2436A71, switching distance max.: 0 m ... 60 m, sensor principle: through-beam light barrier, switching output: PNP, switching type: light/dark switching, connection type: M12 connector, 4-pin, light transmitter: laser, setting: cable, laser class: 1, communication interface: IO-Link, smart sensor: enhanced sensing (counter + debouncing), efficient communication, diagnostics, smart task