SICK WF15-40B416 Fork sensors. SICK WF15-40B416 is a fork sensors in the WF family. SICK identifies this exact configuration as manufacturer article 6028452. The official technical record specifies Functional principle: Optical detection principle; Dimensions (W x H x D): 10 mm x 45 mm x 57 mm; Fork width: 15 mm; Fork depth: 42 mm; Light source: LED, Infrared light; Minimum detectable object (MDO): 0.2 mm. The linked SICK data sheet is specific to WF15-40B416.