SICK WL34-B430 Photoelectric sensors. SICK WL34-B430 is a photoelectric sensors in the W34 family. SICK identifies this exact configuration as manufacturer article 1019245. 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): 27 mm x 92 mm x 70 mm; Housing design (light emission): Rectangular; Sensing range max.: 0.03 m ... 22 m 1); Sensing range: 0.03 m ... 15 m 1). The linked SICK data sheet is specific to WL34-B430.