Miniature light barriers, W4S-3 Inox Glass, max. switching distance: 0 m ... 5 m, sensor principle: reflection light barrier, detection principle: autocollimation, switching output: PNP, switching type: light/dark switching, connection type: cable with M12 plug, 4-pin, 150 mm, light transmitter: PinPoint LED, setting: teach-in button, communication interface: -