Miniature light barriers, W4F, WTB4FP-22161120A00, switching distance min. / max.: 4 mm / 220 mm, sensor principle: reflection light sensor, detection principle: background suppression, switching output: push-pull: PNP / NPN, connection type: connector M8, 4-pin, light transmitter: PinPoint LED, light type: visible red light, housing material: VISTAL®, setting: teach-in button, potentiometer, cable, push-turn element, communication interface: IO-Link V1.1, smart sensor: enhanced sensing (basic logic), efficient communication, diagnostics, smart task