SICK WLD4FP-2216A130A00 Photoelectric sensors. SICK WLD4FP-2216A130A00 is a photoelectric sensors in the W4 family. SICK identifies this exact configuration as manufacturer article 1119993. The official technical record specifies Functional principle: Photoelectric retro-reflective sensor; Functional principle detail: With minimum distance to reflector (dual lens system); Sensing range min.: 0 mm; Sensing range max.: 4.5 m; Maximum distance range from reflector to sensor (operating reserve 1): 0.015 m ... 4.5 m; Recommended distance range from reflector to sensor (operating reserve 3,75): 0.035 m ... 3.9 m. The linked SICK data sheet is specific to WLD4FP-2216A130A00.