{"product_id":"honeywell-tf428wnm-u-thermostat-panel","title":"Honeywell TF428WNM\/U Thermostat Panel","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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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: 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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\u003eHoneywell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel Number\u003c\/td\u003e\n\u003ctd\u003eTF428WNM\/U\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Category\u003c\/td\u003e\n\u003ctd\u003eThermostat Panel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication Protocol\u003c\/td\u003e\n\u003ctd\u003eModbus RTU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhysical Layer\u003c\/td\u003e\n\u003ctd\u003eEIA485\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBaud Rate\u003c\/td\u003e\n\u003ctd\u003e4800\/9600 (default)\/19200\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e220\/230 VAC, 50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;2 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Output\u003c\/td\u003e\n\u003ctd\u003eOn\/Off\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Control Accuracy\u003c\/td\u003e\n\u003ctd\u003e±1°C at 21°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSetpoint Range\u003c\/td\u003e\n\u003ctd\u003e10 to 32°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Class\u003c\/td\u003e\n\u003ctd\u003eIP20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAmbient Operating Limits\u003c\/td\u003e\n\u003ctd\u003e0 to 49°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity Limits\u003c\/td\u003e\n\u003ctd\u003e5 to 90% RH, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003e2-pipe\/4-pipe fan coil systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFan Control\u003c\/td\u003e\n\u003ctd\u003e3-speed, manual or automatic\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\u003eModbus RTU Communication\u003c\/h3\u003e\n\u003cp\u003eEIA485 physical layer with Modbus RTU protocol for integration into building automation systems.\u003c\/p\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003ch3\u003e3-Speed Fan Control\u003c\/h3\u003e\n\u003cp\u003eManual or automatic 3-speed fan control for fan coil unit applications.\u003c\/p\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003ch3\u003e2-Pipe\/4-Pipe Fan Coil Applications\u003c\/h3\u003e\n\u003cp\u003eDesigned for 2-pipe and 4-pipe fan coil systems with cooling\/heating and manual\/automatic changeover.\u003c\/p\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003ch3\u003eOn\/Off Valve Control\u003c\/h3\u003e\n\u003cp\u003eProvides on\/off water valve control output for fan coil temperature regulation.\u003c\/p\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003ch3\u003e±1°C Temperature Accuracy\u003c\/h3\u003e\n\u003cp\u003eTemperature control accuracy of ±1°C at 21°C for stable room temperature maintenance.\u003c\/p\u003e\u003c\/article\u003e\u003carticle class=\"card\"\u003e\u003ch3\u003eIP20 Protection\u003c\/h3\u003e\n\u003cp\u003eIP20-rated enclosure suitable for indoor wall-mounted installation in building environments.\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\u003eFan coil unit temperature control\u003c\/li\u003e\n\u003cli\u003eBuilding automation and HVAC systems\u003c\/li\u003e\n\u003cli\u003e2-pipe cooling or heating fan coil systems\u003c\/li\u003e\n\u003cli\u003e4-pipe cooling\/heating fan coil systems\u003c\/li\u003e\n\u003cli\u003eHotel room and office temperature management\u003c\/li\u003e\n\u003cli\u003eCommercial building climate control\u003c\/li\u003e\n\u003cli\u003eModbus RTU network integration for HVAC control\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 Honeywell TF428WNM\/U Thermostat Panel. 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 Honeywell TF428WNM\/U?\u003c\/strong\u003e\nIt is a communicating fan coil thermostat designed for 3-speed fan and valve control in fan coil systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat communication protocol does it use?\u003c\/strong\u003e\nIt uses Modbus RTU over an EIA485 physical layer.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the power supply?\u003c\/strong\u003e\nThe power supply is 220\/230 VAC, 50\/60 Hz.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the power consumption?\u003c\/strong\u003e\nThe power consumption is less than 2 W.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the temperature control accuracy?\u003c\/strong\u003e\nThe temperature control accuracy is ±1°C at 21°C.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the setpoint range?\u003c\/strong\u003e\nThe setpoint range is 10 to 32°C.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the protection class?\u003c\/strong\u003e\nThe protection class is IP20.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the ambient operating temperature range?\u003c\/strong\u003e\nThe ambient operating limit is 0 to 49°C.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat fan speeds does it support?\u003c\/strong\u003e\nIt supports manual or automatic 3-speed fan control.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat types of fan coil systems is it intended for?\u003c\/strong\u003e\nIt is intended for 2-pipe and 4-pipe fan coil systems.\u003c\/p\u003e\n\u003c\/section\u003e\u003c\/main\u003e\u003c\/div\u003e\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":68031319736399,"sku":"LL1-Honeywell-TF428WNM\/U","price":111.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0710\/7569\/2623\/files\/TF428WNM_U-01.jpg?v=1793858663","url":"https:\/\/yunshuotrade.com\/products\/honeywell-tf428wnm-u-thermostat-panel","provider":"yunshuotrade","version":"1.0","type":"link"}