Miniature light barriers, W4S-3 Glass, max. switching distance: 0.01 m ... 5 m, sensor principle: reflection light barrier, detection principle: autocollimation, switching output: PNP, switching type: dark switching, connection type: cable with M8 plug, 3-pin, 100 mm, light transmitter: PinPoint LED, setting: teach-in button, communication interface: -