{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"WL12G-3B2531","brand":"SICK","brandSlug":"sick","productSlug":"WL12G-3B2531","canonicalUrl":"https://aoctrl.com/sick/WL12G-3B2531","factsUrl":"https://aoctrl.com/api/mcp/products/WL12G-3B2531","rawCanonicalId":null},"summary":{"shortDescription":"SICK W12G Series, Photoelectric Retro-Reflective Sensor, WL12G-3B2531, 4 m sensing range, 330 µs response, NPN/PNP output, IP66/IP67/IP69K, M12 5-pin connector.","salesMarkdown":"The SICK WL12G-3B2531 is a photoelectric retro-reflective sensor from the W12G series, designed to detect objects at distances up to 4 m using a visible red LED light source. It outputs both NPN and PNP signals, configurable as light-ON or dark-ON, making it flexible for integration into most PLC or relay logic inputs. The 4 m sensing range covers typical conveyor, pallet, and packaging line gaps. The 330 µs response time keeps up with fast-moving parts on a high-speed line. Rated IP66, IP67, and IP69K, the housing and optics survive high-pressure, high-temperature washdown — essential for food, beverage, and pharmaceutical lines where hot caustic CIP cycles are routine. The M12 5-pin connector simplifies field replacement: no hard-wiring, just unplug and swap. Operating voltage range of 10–30 V DC covers standard 24 V control systems with margin for brownout. The 100 mA load current drives most PLC inputs and small relays directly.","metaTitle":"SICK WL12G-3B2531 Photoelectric Retro-Reflective Sensor, 4m,","metaDescription":"SICK WL12G-3B2531 photoelectric retro-reflective sensor, 4m range, 330 µs response, NPN/PNP output, IP66/IP67/IP69K, M12 5-pin. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Photoelectric Sensors"],"specifications":{"Width":"15.6 mm","Height":"48.5 mm","Length":"42 mm","Series":"W12G","Light Type":"LED, Visible Red Light","Sensor Type":"Photoelectric Retro-Reflective Sensor","Load Current":"100 mA","Response Time":"330 us","Switching Type":"Light-ON / Dark-ON","lifecycle_stage":"current","Termination Type":"Connector, M12, 5-Pin","Protection Rating":"IP66;IP67;IP69K","Sensing Distance Max.":"4 m","Sensing Distance Min.":"0 m","Operating Voltage Max.":"30 V","Operating Voltage Min.":"10 V","Operating Temperature Max.":"60 °C","Operating Temperature Min.":"-40 °C","Optical Sensor Output Type":"NPN;PNP"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$200.03 – $309.13","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/e7da37ce7c9e40527d205e6831774249.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/WL12G-3B2531/alternatives.json"},"ai":{"faq":[{"question":"Will the WL12G-3B2531 drop into a panel wired for the WL12G-3O2431?","answer":"The WL12G-3O2431 uses a 4-pin M12 connector and outputs PNP only. The WL12G-3B2531 uses a 5-pin M12 connector and outputs both NPN and PNP. The pinout differs, so the cable or mating connector must be swapped or rewired — it is not a direct mechanical and electrical drop-in without adapter."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/sick/WL12G-3B2531","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/sick/WL12G-3B2531 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}