18 mm Plastic General Purpose Sensors

Bulletin 42CA 18 mm Plastic Cylindrical General Purpose Sensors are ideal for light- to medium-duty industrial applications. These sensors flash an indicator if the signal level is too close to the detection threshold. This helps you align the sensor and warns against detection of a background or degradation of the application characteristics.

Bulletin 42CA 18 mm Plastic Cylindrical General Purpose Photoelectric Sensors
  • Overview
  • Product Selection
  • Specifications
  • Documentation
  • Resources
  • Applications

Features

  • 10...30V DC operation
  • NPN or PNP outputs
  • Complementary light and dark operate outputs
  • Selectable light or dark operate on background suppression models
  • Two status indicators for power, output, unstable operation and short-circuit protection
  • 1 ms response time on most models
  • Extended range high-speed models with a 0.5 ms response time
  • Patented ASIC design offers linear sensitivity adjustment, stability indication and excellent noise immunity
  • Flat lens reduces dust collection
  • Visible red status indicator on polarized retroreflective models
  • Input to disable light source on transmitted beam emitter for testing and scanning purposes

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Specifications

TitleNumberDownload
PHOTOSWITCH Bulletin 42CA Cylindrical Photoelectric Sensors Installation Instructions42CA-IN002

Certifications

  • CE Marked for all applicable directives
  • cULus Listed

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

Product Certifications

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

Documentation

TitleNumberDownload
Presence Sensing BrochureSENSOR-BR001
PHOTOSWITCH Bulletin 42CA Cylindrical Photoelectric Sensors Installation Instructions42CA-IN002
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Product Certifications

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

Configuration & Selection Tools

Other Resources

  • Knowledgebase — Visit our online resource for technical information, support chat and forums, software updates, and product safety advisories/notices.

Applications

  • Food processing
  • Material handling
  • Packaging
  • Transportation

See how our Presence Sensors are used in the following applications:

Product Application Library — View our product application library to discover how customers have applied Allen-Bradley sensing products.