Photoelectric sensors
W4S-3 Inox

Highest reliability, maximum resistance and endless possibilities

Your Benefits

  • Long service life in harsh conditions ensures less downtime and fewer replacement costs
  • Quick and easy alignment due to highly visible PinPoint emitter LED
  • Easy adjustment via a stainless steel metal membrane teach-in pushbutton
  • IO-Link provides easy data access from the PLC
  • Quick and easy configuration
  • Quick and easy integration using function blocks
  • Easy device replacement and identification


Highest reliability, maximum resistance and endless possibilities

The W4S-3 INOX product family in WashDown design combines rugged watertight IP 69K stainless steel housing with "best-in-class" optical functionality.

These space-saving miniature sensors are able to withstand the most aggressive cleaning agents and disinfectants thanks to a membrane teach-in button that is 100% watertight and pin-cast M12 connections. They can be relied upon for long-term service in critical applications in the food and beverage, pharmaceutical, solar, and electronics industries.

At a glance
  • WashDown rated for fluid tightness (IP 66, IP 67, IP 68 and IP 69K) and Ecolab certified
  • Tough stainless steel housing (316L/1.4404)
  • Resistant to a variety of common cleaning and disinfection agents
  • Highly visible laser-like light spot due to PinPoint LED
  • Teach-in via stainless steel pushbutton with a metal membrane
  • Flexible sensor settings, monitoring, advanced diagnostics, and visualization thanks to IO-Link

Technical overview

  • Technical data overview

    Technical data overview

    Dimensions (W x H x D)

    15.25 mm x 44.5 mm x 22.2 mm

    15.25 mm x 48.6 mm x 22.2 mm

    15.25 mm x 49.2 mm x 22.2 mm

    15.25 mm x 44.9 mm x 22.2 mm

    15.3 mm x 55.4 mm x 22.2 mm

    Light sourcePinPoint LED
    Type of lightVisible red light
    Enclosure ratingIP66, IP67, IP68, IP69K
    Housing materialStainless steel


    Teach-in button


All technical data can be found accompanying the individual product