Small light barriers, W12, WL12G-3O2431, Device type: Light sensors and light barriers, Switching distance max.: 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: LED, Light type: Visible red light, Housing material: Die-cast zinc, Adjustment: Potentiometer, Included in delivery: 2 x clamp holder BEF-KH-W12, incl. screws