SICK W4S-3 Miniature Photoelectric Sensor - 0mm to 4000mm - M8 3 Pin Connector - 1042065


W4S-3 Photoelectric sensor family with best-in-class performance

The W4S-3 family of photoelectric sensors offers best-in-class performance in a slim housing design. Universal use of the latest ASIC and PinPoint LED technologies provide maximum reliability in the detection of all objects, including transparent and shiny objects like blisters, e-cards and aluminum cans. Optical axes on the flat side enable simple, space-saving integration in the machine environment - even without separate mounting brackets.

  • Best background suppression sensor in its class
  • Universal use of PinPoint LED technology in all models
  • BGS proximity sensor with laser-like light spot for precise detection tasks
  • Reliable setting via 5-turn potentiometer, teach-in pushbutton, teach-in via cable or IO-Link
  • Flexible sensor settings, monitoring, advanced diagnostics, and visualization thanks to IO-Link Your benefits
  • Application versatility due to reliable detection of shiny, transparent or jet-black objects


Functional principle Photoelectric retro-reflective sensor
Functional principle detail Autocollimation
Dimensions (W x H x D) 12.2 mm x 41.8 mm x 17.3 mm
Housing design (light emission) Rectangular
Sensing range max. 0 m ... 4 m 1)
Sensing range 0 m ... 2.5 m 1)
Type of light Visible red light
Light source PinPoint LED 2)
Light spot size (distance) Ø 45 mm (1.5 m)
Wave length 650 nm
Adjustment None



upply voltage 10 V DC ... 30 V DC 1)
Ripple < 5 Vpp 2)
Current consumption 20 mA 3)
Switching output PNP
Switching mode Dark switching
Output current Imax. ≤ 100 mA
Response time < 0.5 ms 4)
Switching frequency 1,000 Hz 5)
Connection type Connector M8, 3-pin
Circuit protection

A 6)

C 7)

D 8)

Protection class III
Weight 30 g
Polarisation filter
Housing material Plastic, ABS
Optics material Plastic, PMMA
Enclosure rating



Ambient operating temperature –40 °C ... +60 °C
Ambient temperature, storage –40 °C ... +75 °C


Connection Type: M8 3pin

Click Here for PDF Data Sheet