SICK WS/WE24-2B440 Photoelectric sensors. SICK WS/WE24-2B440 is a photoelectric sensors in the W24 family. SICK identifies this exact configuration as manufacturer article 1017875. The official technical record specifies Functional principle: Through-beam photoelectric sensor; Dimensions (W x H x D): 27 mm x 87.5 mm x 65 mm; Housing design (light emission): Rectangular; Sensing range max.: 0 m ... 60 m; Sensing range: 0 m ... 50 m; Focus: Approx. 1°. The linked SICK data sheet is specific to WS/WE24-2B440.