SICK's WL27-3 Reflex Array photoelectric sensor is designed for the detection of irregular shaped objects. Any object 12 mm or larger is detected with the Reflex Array's 50 mm detection height, regardless of object properties or position within the array - including clear materials. Operating in a "reflex" (retro-reflective) mode results in only having to mount and power a single device. An intuitive alignment/teach procedure quickly ensures the device is operating under ideal conditions with the reflector. A high-resolution version offers a Minimum Detectable Object (MDO) resolution down to five mm with 24 mm detection height.

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