SICK WL100-2P1439 Photoelectric sensors. SICK WL100-2P1439 is a photoelectric sensors in the W100-2 family. SICK identifies this exact configuration as manufacturer article 6052360. The official technical record specifies Functional principle: Photoelectric retro-reflective sensor; Functional principle detail: With minimum distance to reflector (dual lens system); Dimensions (W x H x D): 11 mm x 31 mm x 20 mm; Housing design (light emission): Rectangular; Sensing range max.: 0.01 m ... 7.2 m 1); Sensing range: 0.01 m ... 5.5 m 1). The linked SICK data sheet is specific to WL100-2P1439.