SICK WS/WE34-V540 Photoelectric sensors. SICK WS/WE34-V540 is a photoelectric sensors in the W34 family. SICK identifies this exact configuration as manufacturer article 1019252. The official technical record specifies Functional principle: Through-beam photoelectric sensor; Dimensions (W x H x D): 27 mm x 92 mm x 70 mm; Housing design (light emission): Rectangular; Sensing range max.: 0 m ... 60 m; Sensing range: 0 m ... 60 m; Focus: Approx. 1°. The linked SICK data sheet is specific to WS/WE34-V540.