Photoelectric sensors, W280-2, WL280-2R4331, Functional principle: Photoelectric retro-reflective sensor, Functional principle detail: With minimum distance to reflector (dual lens system), Switching output: Relay, Switching mode: Light switching, Connection type: Cable gland, Light source: LED, Adjustment: Potentiometer, Communication interface: -, Included with delivery: Mounting bracket BEF-W280, Reflector P250