The WFL50-40B416 is a compact fork-style photoelectric sensor that uses a red laser and fork optics (50 mm width × 42 mm depth) to detect very fine objects (down to 0.05 mm). Featuring intuitive plus/minus button sensitivity adjustment and PNP/NPN light/dark selectable output, it combines high-speed performance with a rugged aluminum housing (IP65) for reliable detection in industrial settings.