Miniature light barriers, W150, WT150-N460, switching distance max.: 2 mm ... 100 mm, sensor principle: reflection light sensor, detection principle: background suppression, switching output: NPN, switching type: light/dark switching, connection type: connector M8, 4-pin, light transmitter: LED, setting: potentiometer, communication interface: -, included in delivery: mounting bracket BEF-W150-A