46DFA DIN Rail Amplifier

Our Bulletin 46DFA PHOTOSWITCH® DIN Rail Fiber Optic Amplifier is a dual display model designed for the detection of small objects. These sensors are ideal in limited spaces or applications that require detection at high speeds. They are designed to be mounted side by side along a DIN rail away from the actual application. These sensors provide enhanced installation flexibility and excellent noise immunity.


  • Provides two high-visibility displays for feedback that simplifies setup, operation, and maintainenance
  • Offers an ECO (economy) display mode that reduces amplifier power consumption by 25%
  • Includes Teachable LED intensity that adds flexibility for reliable sensing of clear or transparent objects
  • Offers fast-response output when connected using IO-Link enables continuous sensor monitoring without impact on performance
  • Offers fast response speeds of 50 μs, 500 μs, 4 ms, and 32 ms
  • Includes a built-in totalizer feature that simplifies counting applications
  • Offers cross-talk protection for stable operation of multiple sensors in close proximity
  • Provides selectable PNP and NPN outputs that use a push button to reduce inventory
  • Offers embedded IO-Link 1.1 Communication protocol
  • Provides an IP40 rated enclosure

Additional Information

Sensors on IO-Link Can Enable the Connected Enterprise

Watch how smart sensors with IO-Link can enable smart machines for The Connected Enterprise.

IO-Link Technology

IO-Link Technology is a worldwide open-standard protocol that integrates sensors into our Connected Enterprise by connecting the IO-Link enabled device into an IO-Link master module. You can deliver data from the sensor directly into a control system in a very efficient manner. The flexibility of IO-Link capable sensors allows machines to operate more effectively by providing the controller with diagnostics. In addition to product detection, sensors provide detailed and accurate machine health status to improve uptime.

Product Selection


  • CE Marked for all applicable directives
  • RCM
  • UL Listed
Looking for Additional Information?

To find additional product information including CAD drawing files, 3D models and more use our Product Catalog.


Resource Publication Number Language
46DFA DIN Rail Fiber Optic Amplifier Photoelectric Sensors Product Profile 46DFA–PP001
PHOTOSWITCH DIN Rail Fiber Optic Amplifier Installation Instructions 46DFA-IN001
Small Aperture Fiber-optic Amplifier Quick Reference 46DFA-QR001
Integrated Smart Sensor Solution Quick Reference Guide IOLINK-SP001
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