Photoelectric sensors, W12, WSE12-3P2431, Sensing range max.: 0 m ... 20 m, Functional principle: Through-beam photoelectric sensor, Switching output: PNP, Switching mode: Light/dark switching, Connection type: Male connector M12, 4-pin, Light source: LED, Type of light: Visible red light, Adjustment: Potentiometer, Housing: Rectangular, Included with delivery: 2 x clamps BEF-KH-W12, incl. screws