SICK WSE9-3P3430 Photoelectric sensors. SICK WSE9-3P3430 is a photoelectric sensors in the W9 family. SICK identifies this exact configuration as manufacturer article 1049078. The official technical record specifies Functional principle: Through-beam photoelectric sensor; Dimensions (W x H x D): 12.2 mm x 50 mm x 23.6 mm; Housing design (light emission): Rectangular; Mounting hole: M3; Sensing range max.: 0 m ... 10 m; Sensing range: 0 m ... 7 m. The linked SICK data sheet is specific to WSE9-3P3430.