The WL100L-F2131 is a miniature laser retro-reflective sensor featuring a dual-lens design for detecting objects even at minimal distances. It emits a visible red laser (Class 1), supports light/dark output selection via a rotary switch, and allows fine sensitivity adjustment with a 270° potentiometer. Packaged in a compact 11 × 31 × 20 mm housing with IP65 protection, it offers rapid switching in demanding industrial environments and comes with a stainless steel bracket and P250F reflector included