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Series 4000B Long-Range Photoelectric Sensors

Bulletin 42RL Series 4000B Long-Range Photoelectric Sensors

Series 4000B Long-range Photoelectric Sensors are full size, self-contained sensors that operate in a wide range of industrial applications. A wide selection of plug-in timing modules including ON and OFF delay, one-shot, delayed one-shot, motion detector and counting module increase the application solving capability.


  • Harsh duty package
  • Screw terminal connections
  • Long-range sensing modes
  • Plug-in logic and output modules
  • Selectable Light Operate/Dark Operate


  • 42RL Series 4000B Long-Range Sensors


  • UL Listed, CSA Certified

Certifications apply when product is marked. See our Product Certification site for Declarations of Conformity, certificates and other certification details.

Related Products

Frequently Viewed Publications

PHOTOSWITCH Photoelectric Sensors BrochurePHOTO-BR001
Series 4000 Photoelectric Sensors Installation Instructions4000-IN001
More Photoelectric Sensor publications in Literature LibraryAll Languages

Product Catalog

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See our Product Certification site for Declarations of Conformity, certificates and other certification details.

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We offer a variety of accessories for your Long-Range Photoelectric Sensors, including:

  • Cordsets and patchcords
  • Mounting brackets
  • Output modules
  • Reflectors
  • Timing and logic modules

View all accessories in the PHOTOSWITCH Photoelectric Sensors Catalog [PDF]