Photoelectric sensors, W8, WTB8-P2231, Functional principle: Photoelectric proximity sensor, Functional principle detail: Background suppression, Switching output: PNP, Switching mode: Light/dark switching, Connection type: Male connector M8, 4-pin, Light source: LED, Adjustment: Potentiometer, Communication interface: -, Included with delivery: Stainless steel mounting bracket (1.4301/304) BEF-W100-A