Compact light barriers, W280-2, WL280-2P2431, switching distance max.: 0.01 m ... 15 m, 0.01 m ... 12 m, sensor principle: reflection light barrier, detection principle: double lens, switching output: PNP, switching type: light/dark switching, connection type: connector M12, 4-pin, light transmitter: LED, setting: potentiometer, communication interface: -, included in delivery: mounting bracket BEF-W280, reflector P250