{"product_id":"keyence-fu-66-fiber-optic-sensor","title":"Keyence FU-66 Fiber Optic Sensor Fiber Unit","description":"\u003cstyle\u003e\n.nxs-industrial-product-page {\n--industrial-navy: #082f49;\n    --industrial-blue: #0b4f7c;\n    --industrial-blue-2: #0f6ea8;\n    --industrial-blue-3: #1784c1;\n    --industrial-cyan: #38bdf8;\n    --steel-blue: #dcebf5;\n    --steel-blue-2: #edf6fb;\n    --steel-line: #c9dce9;\n    --surface: #ffffff;\n    --surface-soft: #f7fbfe;\n    --text-main: #173042;\n    --text-muted: #5e7382;\n    --shadow-soft: 0 10px 30px rgba(8, 47, 73, 0.08);\n    --shadow-hover: 0 16px 36px rgba(8, 79, 124, 0.15);\n    --radius-lg: 14px;\n    --radius-md: 10px;\n}\n\n.nxs-industrial-product-page, .nxs-industrial-product-page * {\nmargin: 0;\n    padding: 0;\n    box-sizing: border-box;\n    font-family: Arial, Helvetica, sans-serif;\n}\n\n.nxs-industrial-product-page {\nbackground-color: #f3f8fb;\n    background-image:\n        linear-gradient(180deg, #eef6fb 0, 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anywhere;\n}\n\n.nxs-industrial-product-page .spec-table td:first-child {\nwidth: 42%;\n}\n\n.nxs-industrial-product-page .features {\ngrid-template-columns: 1fr;\n        gap: 12px;\n}\n\n.nxs-industrial-product-page .card {\npadding: 18px 17px;\n}\n\n.nxs-industrial-product-page .card:hover {\ntransform: none;\n}\n\n.nxs-industrial-product-page .section ul {\ngrid-template-columns: 1fr;\n        gap: 9px;\n}\n\n.nxs-industrial-product-page .section li {\npadding: 11px 12px 11px 36px;\n        font-size: 14px;\n}\n\n.nxs-industrial-product-page .section:last-of-type \u003e p {\npadding: 16px 14px 16px 48px;\n        font-size: 14px;\n}\n\n.nxs-industrial-product-page .section:last-of-type \u003e p::before {\nleft: 12px;\n        top: 15px;\n        min-width: 26px;\n        height: 26px;\n        font-size: 10px;\n}\n}\n\n@media (prefers-reduced-motion: reduce) {\n.nxs-industrial-product-page, .nxs-industrial-product-page *, .nxs-industrial-product-page *::before, .nxs-industrial-product-page *::after {\ntransition: none !important;\n}\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"nxs-industrial-product-page\"\u003e\u003cdiv class=\"container\"\u003e\u003cmain\u003e\u003csection class=\"section\"\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"spec-table\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eKeyence\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eFU-66\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Category\u003c\/td\u003e\n\u003ctd\u003eFiber Optic Sensor Fiber Unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSize\u003c\/td\u003e\n\u003ctd\u003eM4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Arrangement\u003c\/td\u003e\n\u003ctd\u003eParallel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFiber Unit Length\u003c\/td\u003e\n\u003ctd\u003e2 m Free-cut\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFiber Unit Diameter\u003c\/td\u003e\n\u003ctd\u003eø1.3 × 2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShape\u003c\/td\u003e\n\u003ctd\u003eStraight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Bend Radius\u003c\/td\u003e\n\u003ctd\u003eR25 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Detectable Object\u003c\/td\u003e\n\u003ctd\u003eø0.005 mm Gold Wire\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmbient Temperature\u003c\/td\u003e\n\u003ctd\u003e-40°C to +70°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003eApprox. 10 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/section\u003e\u003csection class=\"section\"\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cdiv class=\"features\"\u003e\n\u003carticle class=\"card\"\u003e\u003ch3\u003eM4 Size Fiber Unit\u003c\/h3\u003e\n\u003cp\u003eThe FU-66 is an M4-size reflective fiber optic unit designed for mounting in space-constrained sensing positions.\u003c\/p\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003ch3\u003eParallel Detection Arrangement\u003c\/h3\u003e\n\u003cp\u003eParallel fiber arrangement supports reflective sensing configurations when paired with a compatible fiber amplifier.\u003c\/p\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003ch3\u003e2 m Free-Cut Fiber Length\u003c\/h3\u003e\n\u003cp\u003eThe fiber unit is supplied in a 2 m length that can be cut to suit installation routing requirements.\u003c\/p\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003ch3\u003eø0.005 mm Minimum Detectable Object\u003c\/h3\u003e\n\u003cp\u003ePublished specifications identify a minimum detectable object of ø0.005 mm gold wire under optimized detecting distance and sensitivity settings.\u003c\/p\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003ch3\u003e-40°C to +70°C Ambient Range\u003c\/h3\u003e\n\u003cp\u003eThe fiber unit is specified for ambient temperatures from -40°C to +70°C.\u003c\/p\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003ch3\u003eR25 mm Minimum Bend Radius\u003c\/h3\u003e\n\u003cp\u003eA minimum bend radius of R25 mm is specified for routing the fiber without exceeding the published bending limit.\u003c\/p\u003e\u003c\/article\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"section\"\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSmall-object detection in automated machinery\u003c\/li\u003e\n\u003cli\u003ePresence and positioning checks in confined spaces\u003c\/li\u003e\n\u003cli\u003eFiber-optic sensing where the amplifier is remotely mounted\u003c\/li\u003e\n\u003cli\u003eIndustrial automation sensing installations\u003c\/li\u003e\n\u003cli\u003eReflective sensing setups using compatible fiber amplifiers\u003c\/li\u003e\n\u003cli\u003eSpace-limited detection points in production equipment\u003c\/li\u003e\n\u003cli\u003eGeneral industrial fiber-optic sensing integration\u003c\/li\u003e\n\u003cli\u003eSensing tasks requiring a free-cut fiber length\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e\u003csection class=\"section\"\u003e\u003ch2\u003ePurchase Information\u003c\/h2\u003e\n\u003cp\u003eWe support online purchase of the Keyence FU-66 Fiber Optic Sensor Fiber Unit. If you need to make bulk purchases and inquire about other products, please contact our team to inform us of your purchase requirements. We will provide you with information such as quantity quotations, delivery dates, and transportation methods.\u003c\/p\u003e\u003c\/section\u003e\u003csection class=\"section\"\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the Keyence FU-66?\u003c\/strong\u003e\nThe Keyence FU-66 is a reflective fiber optic sensor fiber unit in the M4 size class.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the detection arrangement of the FU-66?\u003c\/strong\u003e\nThe FU-66 uses a parallel detection arrangement.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the fiber unit length?\u003c\/strong\u003e\nThe fiber unit length is 2 m and is free-cut.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the fiber diameter?\u003c\/strong\u003e\nThe fiber unit diameter is ø1.3 × 2 mm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the minimum detectable object?\u003c\/strong\u003e\nPublished specifications list a minimum detectable object of ø0.005 mm gold wire under optimized conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the minimum bend radius?\u003c\/strong\u003e\nThe minimum bend radius is R25 mm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the ambient temperature range?\u003c\/strong\u003e\nThe specified ambient temperature range is -40°C to +70°C.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the weight of the FU-66?\u003c\/strong\u003e\nThe FU-66 weighs approximately 10 g.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the FU-66 include a fiber amplifier?\u003c\/strong\u003e\nThe FU-66 is a fiber unit; detecting distance details are provided in the compatible fiber amplifier catalog.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat should be checked before ordering?\u003c\/strong\u003e\nCheck the M4 mounting size, parallel fiber arrangement, 2 m free-cut length, R25 mm bend radius, and ambient temperature compatibility with the intended installation.\u003c\/p\u003e\u003c\/section\u003e\u003c\/main\u003e\u003c\/div\u003e\u003c\/div\u003e","brand":"Keyence","offers":[{"title":"Default Title","offer_id":68049220173903,"sku":"LL1-KEY-FU-66","price":9.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/7569\/2623\/files\/FU-66-01.jpg?v=1793946730","url":"https:\/\/yunshuotrade.com\/products\/keyence-fu-66-fiber-optic-sensor","provider":"yunshuotrade","version":"1.0","type":"link"}