Fully Operational with Expanded Resources Click for the latest on how KEYENCE is continuing to support our customers with quick delivery, off-site testing, virtual demos and more.
  1. Home
  2. Products
  3. Sensors
  4. Fibre Optic Sensors
  5. Digital Fibre Optic Sensors
  6. Models
  7. Transmissive Fibre Unit, Area Type, 5-mm Wide

Digital Fibre Optic SensorsFS-N series

Transmissive Fibre Unit, Area Type, 5-mm Wide



Select Language




Array thrubeam model

Optical axis diameter
(Standard target to be detected)

6 × 0.3 mm

Fibre unit length

2 m free-cut

Fibre unit diameter


Minimum bend radius

R4 mm*2

Minimum detectable object

Opaque material with a diameter of 0.2 mm*3

Tightening torque

0.3 N m

Environmental resistance

Enclosure rating


Ambient temperature

-40 to +70 °C (No freezing)

Relative humidity

35 to 85 % RH (No condensation)


Main unit case : polybutylene terephthalate, case tips : liquid-crystal polymer, core fibre : acrylic, fibre sheath : polyethylene


Mounting screws (M3 × ℓ8), fibre cutter


Approx. 20 g

*1 For details on the detecting distance, see the fibre amplifier catalogue.
*2 The section 10 mm in length from the base of the case is R10.
*3 The minimum detectable object is the value when the detecting distance and sensitivity have been set to their optimal state.

  • For Beginners Sensor Basics Understanding fundamental - Introduction Guide to Sensors
  • General Catalogue Request
  • Trade Shows and Exhibitions
  • eNews Subscribe