Detect What Was Undetectable

SICK’s WTB4 MultiLine photoelectric sensor uses specially designed optics to create two line-shaped light spots to continuously detect objects with large gaps, such as PCBs, or product that is shiny or dark from leading to trailing edge. To activate the output, both light sources must reflect light back to the sensor. Once both light sources have been returned, the sensor will remain active even if one of the light beams is not returned. By using two light beams, the WTB4 is able to detect a wide range of products that previously caused downtime due to incorrect detection from a single point sensor.

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