Small light barriers, W12, WL12GC-3P2472A91, Device type: Light sensors and light barriers, Max. switching distance: 0 m ... 4 m, Sensor principle: Reflection light barrier, Detection principle: Autocollimation, Switching output: PNP, Switching type: Light/dark switching, Connection type: M12 connector, 4-pin, Light transmitter: PinPoint LED, Light type: Visible red light, Housing material: Die-cast zinc, Setting: Cable, Teach-in button, Communication interface: IO-Link V1.1, Smart Sensor: Enhanced Sensing (time stamp + debouncing), Efficient communication, Diagnostics, Smart Task