Photoelectric sensors
W4SL-3H, Photoelectric proximity sensor, Background
suppression

At a glance
• Precise laser light spot, laser class 1
• Stainless steel housing with hygienic design
• Latest SICK proprietary ASIC and laser technologies for very good background
   suppression and ambient light immunity
• ECOLAB certified, tested to IP66, IP67, IP68 and IP69K enclosure rating
• State-of-the-art connections through 100 % sealed electronics
• Patented teach-in pushbutton consisting of a stainless steel membrane welded
   into the housing

Your benefits
• Precise laser light spot for highly accurate switching behavior
• Washable stainless steel housing reduces bacterial contamination
• Innovative hygienic design with sealed connections and unique patented
   membrane teach-in pushbutton
• High level of system reliability and minimal operating costs even when aggressive
   cleaners are used, thanks to high-quality manufacturing and inspection
• High ambient light immunity reduces incorrect switching and ultimately machine
   downtime, even when modern energy-saving lights are used
• The highest degree of machine design flexibility. Outstanding BGS (background
   suppression) eliminates the effect of undesired background reflections.