SICK WL9-3P2232 Photoelectric sensors. SICK WL9-3P2232 is a photoelectric sensors in the W9 family. SICK identifies this exact configuration as manufacturer article 1049060. The official technical record specifies Functional principle: Photoelectric retro-reflective sensor; Functional principle detail: Without reflector minimum distance (autocollimation/coaxial optics); Dimensions (W x H x D): 12.2 mm x 49.8 mm x 23.6 mm; Housing design (light emission): Rectangular; Mounting hole: M3; Sensing range max.: 0 m ... 5 m 1). The linked SICK data sheet is specific to WL9-3P2232.