Photoelectric sensors, W9, WL9L-3P2432, Functional principle: Photoelectric retro-reflective sensor, Functional principle detail: Without reflector minimum distance (autocollimation/coaxial optics), Switching output: PNP, Switching mode: Light/dark switching, Connection type: Male connector M12, 4-pin, Light source: Laser, Adjustment: Teach-in button, Laser class: 1, Communication interface: -