Miniature light barriers, W150, WL150-P132, switching distance max.: 0 m ... 2.4 m, sensor principle: reflection light barrier, detection principle: double lens, switching output: PNP, switching type: light/dark switching, connection type: cable, 4-wire, 2 m, light transmitter: LED, setting: potentiometer, communication interface: -, included in delivery: mounting bracket BEF-W150-A, reflector PL20A