Photoelectric sensors

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


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


Robotics image
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.
Find out more


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)

    1 mm ... 36 mm 2)

    3 mm ... 30 mm 2)

    1 mm ... 36 mm

    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