Photoelectric sensors, V180-2, VL180-2P42431, Functional principle: Photoelectric retro-reflective sensor, Functional principle detail: With minimum distance to reflector (dual lens system), Switching output: PNP, Switching mode: Light/dark switching, Connection type: Male connector M12, 4-pin, Light source: LED, Adjustment: Potentiometer, Communication interface: -, Included with delivery: Reflector P250, fastening nuts (2 x)