Photoelectric sensors, GR18, GRTE18-P2452, Functional principle: Photoelectric proximity sensor, Functional principle detail: Energetic, 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: Fastening nuts (2 x)