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QL51 Series Luminescence Sensor

The QL51 Series Luminescence Sensor is an easy-to-use, sensitive luminescence sensor that emits ultraviolet (UV) light and detects the visible light created by luminescent targets. This technology allows for the detection of luminescent marks (even invisible ones) on any surface, independently from its material, color, or distance inside the operating range, as long as the target radiates visible light when illuminated with UV light.



  • Compact, self-contained design
  • Senses luminescent marks, even on luminescent backgrounds or reflective surfaces
  • High-power UV emission provides a consistent beam for improved sensitivity
  • Fast switching frequency and low response time
  • Push button programming for easy setup
  • Sturdy ABS plastic housing
  • Bipolar (1 NPN & 1 PNP) outputs