WLL170 is a fiber-optic sensor. Easy to use via potentiometer and switch, and can also be optimized for each type of application. Can set the sensitivity or speed of detection. It has a measurement output that can be automatically controlled.


  • Rapid response time (50 μs)
  • Switching threshold adjustment via potentiometer, or teach-in via button or cable
  • Reliable, rapid process detection
  • Low installation costs due to short commissioning time



Technical data overview

Dimensions (W x H x D) 10.5 mm x 35.5 mm x 83.7 mm
Sensing range max. 0 mm … 4,000 mm, Through-beam system 1)
Light source LED
Type of light Visible red light / visible green light
Enclosure rating IP66 2)
Housing material Plastic ABS/PC

Plastic ABS

Adjustment Potentiometer, 10 turns

Single teach-in button


1) LL3-TB02 and tip adapter LL3-TA01.

2) With correctly attached fiber-optic cable LL3 and closed protection hood.


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