SICK WSE4SL-3P2437V Photoelectric sensors. SICK WSE4SL-3P2437V is a photoelectric sensors in the W4 family. SICK identifies this exact configuration as manufacturer article 1058269. The official technical record specifies Functional principle: Through-beam photoelectric sensor; Sensing range max.: 0 m ... 60 m; Sensing range: 0 m ... 50 m; Light source: Laser 1); Type of light: Visible red light; Light spot size (distance): Ø 1 mm (500 mm). The linked SICK data sheet is specific to WSE4SL-3P2437V.