Miniature light barriers, W100-2, WS/WE100-2P1439, switching distance max.: 0 m ... 33 m, sensor principle: one-way light barrier, switching output: PNP, switching type: light/dark switching, connection type: cable, 3-wire, 2 m, light transmitter: LED, setting: potentiometer, included in delivery: 2 stainless steel mounting brackets (1.4301/304) BEF-W100-A