{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"WL12G-3O2431","brand":"SICK","brandSlug":"sick","productSlug":"WL12G-3O2431","canonicalUrl":"https://aoctrl.com/sick/WL12G-3O2431","factsUrl":"https://aoctrl.com/api/mcp/products/WL12G-3O2431","rawCanonicalId":null},"summary":{"shortDescription":"SICK WL12G, Photoelectric Retro-Reflective Sensor, PNP, 4 m sensing distance, 330 µs response, 10–30 VDC, M12 4-pin, IP66/IP67/IP69K.","salesMarkdown":"The SICK WL12G-3O2431 is a photoelectric retro-reflective sensor in the WL12G series, delivering a 4 m sensing range with a visible red LED. The PNP output switches at 330 µs, fast enough for counting or position detection on moderate-speed packaging and material-handling lines. Rated IP66, IP67, and IP69K, the housing and optics survive high-pressure washdown and hot caustic CIP cycles — a natural fit for food-and-beverage, brewery, or dairy environments where hygiene protocols are the norm. The 4 m retro-reflective range uses a reflector (sold separately) and handles clean, dry targets at that distance. For dusty or wet conditions, derate the sensing distance — the visible red beam helps with alignment during commissioning. The 330 µs response time is adequate for most conveyor and packaging applications but not for high-speed pick-and-place. Operating voltage spans 10–30 VDC, and the PNP output sinks up to 100 mA — enough to drive a PLC input directly or a small relay. The M12 4-pin connector (standard A-coded) mates with common field-wireable cordsets. Light / Dark ON switching is selectable via the teach-in or wiring, so the same part handles both presence and gap detection without a different model number.","metaTitle":"SICK WL12G-3O2431 Photoelectric Retro-Reflective Sensor, PNP","metaDescription":"SICK WL12G-3O2431 photoelectric retro-reflective sensor, PNP output, 4m range, 330 µs response, IP66/IP67/IP69K, M12 connector. Active production.","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","Series":"WL12G","Light Type":"LED, Visible Red Light","Sensor Type":"Photoelectric Retro-Reflective Sensor","Load Current":"100 mA","Response Time":"330 us","Switching Type":"Light / Dark ON","lifecycle_stage":"current","Termination Type":"Connector, M12, 4-Pin","Protection Rating":"IP66;IP67;IP69K","Sensing Distance Max.":"4 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":"PNP"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$197.95 – $309.13","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/3b17935ae39e187742f8b00d2e45b713.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/WL12G-3O2431/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional alternative to the WL12G-3O2431?","answer":"The WL12G-3B2531 shares the same 15.6 mm width, 48.5 mm height, 4 m range, and 330 µs response time, but offers both NPN and PNP outputs via a 5-pin M12 connector. If your circuit expects a PNP-only input, the 3O2431 is the direct fit; the 3B2531 adds NPN flexibility at the cost of one extra pin."},{"question":"Will the WL12G-3O2431 drop into a panel wired for the WL12G-3B2531?","answer":"The 3O2431 uses a 4-pin M12 connector; the 3B2531 uses a 5-pin. The mounting hole pattern and housing dimensions are identical, so the sensor body fits the same bracket. You will need to change the cordset or re-terminate if the existing cable is pinned for 5-pin."},{"question":"What are the key specifications of the WL12G-3O2431?","answer":"Retro-reflective photoelectric sensor, 4 m range, visible red LED, PNP output, 100 mA load, 330 µs response, 10–30 VDC, M12 4-pin connector, IP66/IP67/IP69K, operating temperature -40 to 60 °C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/sick/WL12G-3O2431","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-3O2431 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}}