SICK WLD26P-341121A0ZZZ Photoelectric sensors. SICK WLD26P-341121A0ZZZ is a photoelectric sensors in the W26 family. SICK identifies this exact configuration as manufacturer article 1221733. 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.: 0.25 m; Sensing range max.: 19 m; Maximum distance range from reflector to sensor (operating reserve 1): 0.25 m ... 19 m; Recommended distance range from reflector to sensor (operating reserve 3,75): 0.2 m ... 14 m. The linked SICK data sheet is specific to WLD26P-341121A0ZZZ.