Photoelectric sensors

Incredibly small, yet powerful

Your Benefits

  • Machine design flexibility: the ultra-compact sensors offer above-average sensing distances and provide space-saving installation
  • Remote setup: sensors installed in confined spaces can be set and monitored remotely via IO-Link.
  • High operational reliability: ultrablack objects are detected with a degree of reflection of 1%
  • Maximum reliability during object detection and option of a space-saving machine design without reflectors or through-beam systems
  • Quick and easy commissioning: the photoelectric retro-reflective sensor with autocollimation provides a clearly visible light spot for high process reliability
  • Universal application options: wide range of models enclosed in a rugged housing
  • Proven mounting and housing design


Incredibly small, yet powerful

Developing lighter, more compact, and more intelligent machines. The incredibly small latest generation W2S-2 miniature photoelectric sensor offers completely new machine design possibilities. Intelligent features: the sensors feature background suppression that enables detection of black objects with a degree of reflection of 1%. The W2S-2 also offers world-class sensing distances in this housing size.

Whether it is used in machines in the pharmaceutical industry, in logistics handling applications or in automatic assembly equipment, the ultra-compact W2S-2 offers optimal performance and high reliability in industrial environments. Industry 4.0 is already on board: Both the sensing distance as well as continuous monitoring are set via the controller. The W2S-2 reduces the load on the machine control by using a counter, timestamp and false tripping suppression functions.

Programmable sensors, adjustable via a 3-turn potentiometer, and sensors with fixed sensing distances of 15 mm, 30 mm, 45 mm and 60 mm are also available.

At a glance
  • Sensor with background suppression and without any significant black/white shift
  • PinPoint 2.0 LED with extended sensing distances and high operating reserves
  • A variety of application possibilities thanks to clearly-defined laser-like or line-shaped light spots
  • Detection of highly-transparent and reflective objects using sensors with V-optics
  • Photoelectric retro-reflective sensor with autocollimation and a clearly visible light spot


Sensor solutions for robotics
Robotics image
Sensor solutions for robotics
Robotics image

Working together as equals

Thanks to sensors from SICK, robots perceive more precisely. For all challenges in the field of robotics: Robot Vision, Safe Robotics, End-of-Arm Tooling, and Position Feedback.
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Technical overview

  • Technical data overview

    Technical data overview

    Dimensions (W x H x D)

    7.7 mm x 27.5 mm x 13.5 mm

    7.7 mm x 21.8 mm x 13.5 mm

    Sensing range max.

    50 mm ... 800 mm 1)

    1 mm ... 18 mm 2)

    3 mm ... 30 mm 2)

    1 mm ... 36 mm 2)

    1 mm ... 66 mm 2)

    1 mm ... 60 mm 2)

    4 mm ... 110 mm 2)

    85 mm 2)

    4 mm ... 90 mm 2)

    1 mm ... 150 mm 2)

    3 mm ... 130 mm 2)

    4 mm ... 40 mm 2)

    0 m ... 1.2 m 3)

    0 m ... 2.5 m

    Light source


    PinPoint LED


    Type of light

    Infrared light

    Visible red light

    Visible blue light

    Enclosure ratingIP67
    Housing materialPlastic ABS/PC




    Potentiometer, 3 turns

    Cable Teach-in

    • 1) Object with 6 ... 90 % remission (based on standard white to DIN 5033).
    • 2) Object with 90 % reflectance (referred to standard white, DIN 5033).
    • 3) Reflector P250F.
All technical data can be found accompanying the individual product