{"product_id":"keyence-fu-38s-fiber-optic-sensor","title":"Keyence FU-38S Fiber Optic Sensor 24VDC","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, #f7fafc 320px, #eef3f7 100%),\n        linear-gradient(rgba(15, 110, 168, 0.025) 1px, transparent 1px),\n        linear-gradient(90deg, rgba(15, 110, 168, 0.025) 1px, transparent 1px);\n    background-size: auto, 34px 34px, 34px 34px;\n    position: relative;\n    isolation: isolate;\n    overflow: hidden;\n    color: var(--text-main);\n    line-height: 1.75;\n    -webkit-font-smoothing: antialiased;\n}\n\n.nxs-industrial-product-page .container {\nwidth: 92%;\n    max-width: 1120px;\n    margin: 0 auto;\n    padding-bottom: 34px;\n}\n\n.nxs-industrial-product-page main {\npadding-top: 8px;\n}\n\n.nxs-industrial-product-page .section {\nposition: relative;\n    overflow: hidden;\n    background: var(--surface);\n    margin: 22px auto;\n    padding: 36px 30px;\n    border: 1px solid var(--steel-line);\n    border-radius: var(--radius-lg);\n    box-shadow: var(--shadow-soft);\n}\n\n.nxs-industrial-product-page .section::before {\ncontent: \"\";\n    position: absolute;\n    left: 0;\n    top: 0;\n    width: 5px;\n    height: 100%;\n    background: linear-gradient(180deg, var(--industrial-blue-3), var(--industrial-blue));\n}\n\n.nxs-industrial-product-page .section h2 {\nposition: relative;\n    display: inline-flex;\n    align-items: center;\n    gap: 10px;\n    font-size: 25px;\n    line-height: 1.3;\n    color: var(--industrial-navy);\n    margin-bottom: 24px;\n    letter-spacing: -0.2px;\n}\n\n.nxs-industrial-product-page .section h2::before {\ncontent: \"\";\n    width: 28px;\n    height: 4px;\n    flex: 0 0 28px;\n    border-radius: 999px;\n    background: linear-gradient(90deg, var(--industrial-blue-2), var(--industrial-cyan));\n}\n\n.nxs-industrial-product-page .section p {\ncolor: var(--text-main);\n}\n\n.nxs-industrial-product-page .spec-table {\nwidth: 100%;\n    border-collapse: separate;\n    border-spacing: 0;\n    overflow: hidden;\n    border: 1px solid var(--steel-line);\n    border-radius: var(--radius-md);\n    background: #fff;\n}\n\n.nxs-industrial-product-page .spec-table tr {\ntransition: background-color 0.2s ease, transform 0.2s ease;\n}\n\n.nxs-industrial-product-page .spec-table tr:nth-child(even) {\nbackground: #f7fbfe;\n}\n\n.nxs-industrial-product-page .spec-table tr:hover {\nbackground: #eaf5fb;\n}\n\n.nxs-industrial-product-page .spec-table td {\npadding: 13px 16px;\n    border-bottom: 1px solid #dbe7ef;\n    vertical-align: top;\n    color: #294658;\n}\n\n.nxs-industrial-product-page .spec-table tr:last-child td {\nborder-bottom: none;\n}\n\n.nxs-industrial-product-page .spec-table td:first-child {\nposition: relative;\n    width: 38%;\n    font-weight: 700;\n    color: #0b456d;\n    background: rgba(220, 235, 245, 0.42);\n}\n\n.nxs-industrial-product-page .spec-table td:first-child::after {\ncontent: \"\";\n    position: absolute;\n    top: 22%;\n    right: 0;\n    width: 1px;\n    height: 56%;\n    background: #c7dce9;\n}\n\n.nxs-industrial-product-page .features {\ndisplay: grid;\n    grid-template-columns: repeat(auto-fit, minmax(235px, 1fr));\n    gap: 18px;\n}\n\n.nxs-industrial-product-page .card {\nposition: relative;\n    overflow: hidden;\n    min-height: 100%;\n    background: linear-gradient(180deg, #ffffff 0%, #f4f9fc 100%);\n    padding: 22px 20px 21px;\n    border: 1px solid #d5e4ee;\n    border-radius: var(--radius-md);\n    box-shadow: 0 6px 18px rgba(8, 47, 73, 0.055);\n    transition:\n        transform 0.22s ease,\n        box-shadow 0.22s ease,\n        border-color 0.22s ease;\n}\n\n.nxs-industrial-product-page .card::before {\ncontent: \"\";\n    position: absolute;\n    left: 0;\n    top: 0;\n    width: 100%;\n    height: 4px;\n    background: linear-gradient(90deg, var(--industrial-blue), var(--industrial-cyan));\n}\n\n.nxs-industrial-product-page .card::after {\ncontent: \"\";\n    position: absolute;\n    width: 74px;\n    height: 74px;\n    right: -28px;\n    bottom: -30px;\n    border: 1px solid rgba(15, 110, 168, 0.12);\n    border-radius: 50%;\n    transition: transform 0.22s ease;\n}\n\n.nxs-industrial-product-page .card:hover {\ntransform: translateY(-4px);\n    border-color: #a9cadf;\n    box-shadow: var(--shadow-hover);\n}\n\n.nxs-industrial-product-page .card:hover::after {\ntransform: scale(1.25);\n}\n\n.nxs-industrial-product-page .card h3 {\nposition: relative;\n    color: var(--industrial-blue);\n    font-size: 18px;\n    line-height: 1.35;\n    margin-bottom: 10px;\n    padding-left: 14px;\n}\n\n.nxs-industrial-product-page .card h3::before {\ncontent: \"\";\n    position: absolute;\n    left: 0;\n    top: 0.25em;\n    width: 4px;\n    height: 1em;\n    border-radius: 4px;\n    background: var(--industrial-blue-3);\n}\n\n.nxs-industrial-product-page .card p {\ncolor: #526a79;\n    font-size: 15px;\n}\n\n.nxs-industrial-product-page .section ul {\ndisplay: grid;\n    grid-template-columns: repeat(2, minmax(0, 1fr));\n    gap: 11px 18px;\n    padding-left: 0;\n    list-style: none;\n}\n\n.nxs-industrial-product-page .section li {\nposition: relative;\n    margin: 0;\n    padding: 12px 14px 12px 38px;\n    background: var(--surface-soft);\n    border: 1px solid #dbe8f0;\n    border-radius: 8px;\n    color: #365264;\n}\n\n.nxs-industrial-product-page .section li::before {\ncontent: \"\";\n    position: absolute;\n    left: 15px;\n    top: 50%;\n    width: 9px;\n    height: 9px;\n    transform: translateY(-50%) rotate(45deg);\n    background: var(--industrial-blue-2);\n    box-shadow: 0 0 0 4px rgba(15, 110, 168, 0.1);\n}\n\n.nxs-industrial-product-page .section:nth-of-type(4) p {\npadding: 18px 20px;\n    background: linear-gradient(135deg, #edf7fc, #f9fcfe);\n    border: 1px solid #cfe4f1;\n    border-left: 4px solid var(--industrial-blue-2);\n    border-radius: 9px;\n    color: #355267;\n}\n\n.nxs-industrial-product-page .section:last-of-type {\ncounter-reset: faq;\n}\n\n.nxs-industrial-product-page .section:last-of-type \u003e p {\nposition: relative;\n    margin: 0;\n    padding: 18px 18px 18px 54px;\n    background: #f8fbfd;\n    border: 1px solid #d8e6ef;\n    border-radius: 9px;\n    box-shadow: 0 4px 12px rgba(8, 47, 73, 0.035);\n    transition: border-color 0.2s ease, background-color 0.2s ease;\n    counter-increment: faq;\n}\n\n.nxs-industrial-product-page .section:last-of-type \u003e p:hover {\nbackground: #f1f8fc;\n    border-color: #bfd8e7;\n}\n\n.nxs-industrial-product-page .section:last-of-type \u003e p::before {\ncontent: counter(faq, decimal-leading-zero);\n    position: absolute;\n    left: 15px;\n    top: 17px;\n    min-width: 28px;\n    height: 28px;\n    display: inline-flex;\n    align-items: center;\n    justify-content: center;\n    border-radius: 6px;\n    background: var(--industrial-blue);\n    color: #fff;\n    font-size: 11px;\n    font-weight: 700;\n    letter-spacing: 0.3px;\n    box-shadow: 0 5px 12px rgba(8, 79, 124, 0.18);\n}\n\n.nxs-industrial-product-page .section:last-of-type \u003e p strong {\ndisplay: inline-block;\n    color: #0b456d;\n    margin-bottom: 5px;\n    line-height: 1.4;\n}\n\n.nxs-industrial-product-page .section:last-of-type \u003e br {\ndisplay: block;\n    content: \"\";\n    margin: 10px 0;\n}\n\n@media (max-width: 760px) {\n.nxs-industrial-product-page .container {\nwidth: 100%;\n        padding: 0 12px 24px;\n}\n\n.nxs-industrial-product-page .section {\npadding: 26px 17px 24px;\n        margin: 14px auto;\n        border-radius: 11px;\n}\n\n.nxs-industrial-product-page .section::before {\nwidth: 4px;\n}\n\n.nxs-industrial-product-page .section h2 {\nfont-size: 21px;\n        margin-bottom: 18px;\n}\n\n.nxs-industrial-product-page .section h2::before {\nwidth: 20px;\n        flex-basis: 20px;\n}\n\n.nxs-industrial-product-page .spec-table {\ndisplay: table;\n        table-layout: fixed;\n}\n\n.nxs-industrial-product-page .spec-table td {\npadding: 11px 9px;\n        font-size: 13px;\n        line-height: 1.55;\n        overflow-wrap: 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-38S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Category\u003c\/td\u003e\n\u003ctd\u003eFiber Optic Sensor Unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFiber Unit Type\u003c\/td\u003e\n\u003ctd\u003eDefinite-Reflective\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBeam Emitting Direction\u003c\/td\u003e\n\u003ctd\u003eFlat\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\u003eø2.2 x 2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMinimum Bend Radius\u003c\/td\u003e\n\u003ctd\u003eR5 mm\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. 20 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\u003eDefinite-Reflective Sensing\u003c\/h3\u003e\n\u003cp\u003eDefinite-reflective fiber unit combines emitter and receiver in one head, simplifying installation compared with thrubeam setups.\u003c\/p\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003ch3\u003eFlat Beam Direction\u003c\/h3\u003e\n\u003cp\u003eFlat beam emitting direction suits surface detection and installations where the fiber must sit flush against a surface.\u003c\/p\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003ch3\u003e2 m Free-Cut Fiber\u003c\/h3\u003e\n\u003cp\u003e2 m fiber length can be shortened to fit the routing distance required in the machine.\u003c\/p\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003ch3\u003eR5 mm Bend Radius\u003c\/h3\u003e\n\u003cp\u003eMinimum bend radius of R5 mm allows compact cable routing in constrained equipment.\u003c\/p\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003ch3\u003eWide Temperature Range\u003c\/h3\u003e\n\u003cp\u003eRated for ambient temperatures from -40°C to +70°C.\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\u003eSurface presence detection\u003c\/li\u003e\n\u003cli\u003eLabel and mark sensing\u003c\/li\u003e\n\u003cli\u003ePart ejection verification\u003c\/li\u003e\n\u003cli\u003eAssembly line inspection\u003c\/li\u003e\n\u003cli\u003ePackaging equipment\u003c\/li\u003e\n\u003cli\u003eFiber sensing where single-side access is available\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-38S Fiber Optic Sensor 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-38S?\u003c\/strong\u003e\nThe Keyence FU-38S is a definite-reflective fiber optic sensor unit with a flat beam emitting direction.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the fiber unit length of the FU-38S?\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 of the FU-38S?\u003c\/strong\u003e\nThe fiber unit diameter is ø2.2 x 2 mm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the minimum bend radius of the FU-38S?\u003c\/strong\u003e\nThe minimum bend radius is R5 mm.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the ambient temperature range of the FU-38S?\u003c\/strong\u003e\nThe ambient temperature range is -40°C to +70°C.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the FU-38S a complete sensor?\u003c\/strong\u003e\nNo. The FU-38S is a fiber unit that requires a compatible fiber amplifier for operation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat should be checked before ordering the FU-38S?\u003c\/strong\u003e\nVerify that a definite-reflective sensing method suits the application, the flat beam direction aligns with the mounting surface, and the 2 m fiber length and R5 mm bend radius fit the installation.\u003c\/p\u003e\u003c\/section\u003e\u003c\/main\u003e\u003c\/div\u003e\u003c\/div\u003e","brand":"Keyence","offers":[{"title":"Default Title","offer_id":68061211951183,"sku":"LL1-KEY-FU-38S","price":55.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/7569\/2623\/files\/FU-38S-01_7be038fd-4992-4923-ad89-0ac05ad44a6f.jpg?v=1794023330","url":"https:\/\/yunshuotrade.com\/products\/keyence-fu-38s-fiber-optic-sensor","provider":"yunshuotrade","version":"1.0","type":"link"}