SICK ZLD18-8AB5B8 Photoelectric sensors. SICK ZLD18-8AB5B8 is a photoelectric sensors in the Z18 Simple Sense family. SICK identifies this exact configuration as manufacturer article 1095735. The official technical record specifies Functional principle: Photoelectric retro-reflective sensor; Functional principle detail: With minimum distance to reflector (dual lens system); Dimensions (W x H x D): 23.3 mm x 24 mm x 26 mm; Housing design (light emission): Hybrid; Mounting system type: 24 mm, ball, without alignment aid; Housing color: Blue. The linked SICK data sheet is specific to ZLD18-8AB5B8.