FS-N series (FS-neo)

Digital Fiber Optic Sensors

  • CE Marking
  • UL Listing(c/us)

1. Complete Setup in Just One Click

An entirely new concept in setup ease. Just one click calibrates the sensitivity and resets the display.

Complete Setup in Just One Click

2. Automatic Maintenance

The automatic maintenance function detects light intensity reduction due to dirt or misalignment, and returns the sensor to its original display state. This feature can cancel the effects of the ambient environment, enabling the sensor to continue to perform highly accurate detections.

Water Resistant

3. World's Highest Power Reduces Maintenance Time

"High power" = "large excess gain" that not only reduces the need for maintenance but also expands sensor head capabilities, which reduces setup time.

World's Highest Power Reduces Maintenance Time

Download Catalog FS-N Series Digital Fiber Optic Sensors Catalog (English)


Signing up for a trial of a product in your facility can help answer questions regarding the space required and simplicity of operation. Our professional sales staff can provide you with a product and detailed information. Just indicate "Demonstration desired" on the following form and submit.

Request Demo / Test

Application assistance, support, and other questions.

Feel free to contact us for quotes and additional information regarding model selection, purchasing, and confirmation of the installation method. Our expert engineers are ready to answer any questions.

Contact Us

Get a variety of consultations via telephone, too.
Once connected, just say, "I want to hear more about Fiber Optic Sensors."
We'll connect you to the appropriate professionals.

1-888-KEYENCE (1-888-539-3623)

Mon.--Fri. : 8AM to 5PM
(Local Time Zone)

*Callers will be directed to the nearest sales office.

Download Catalog FS-N Series Digital Fiber Optic Sensors Catalog (English)

Case Studies

  • The Problem: Each medical cartridge in the nest must contain only one bead of blood. What was happening is the cartridge would get by with no bead in it or more than one. All of these beads are forced down a tube by air.


  • FU series - Fiber Unit

    Complete line of fiber units from Unbreakable Fiber, Long-distance and small spot. Select the type best suited to your application

  • NU series - Network Communication Unit

    Dramatic reduction in wiring and installation time. Only a single communication cable is required between the PC/PLC and the NU Series for wiring.

Latest / Most Downloaded

    • General Catalog Request
    • Trade Shows and Exhibitions
    • eNews Subscribe