{"product_id":"honeywell-home-dt4-white-wired-room-thermostat-dt40wt20-on-off-digital-heating-control","title":"Honeywell Home DT4 White Wired Room Thermostat | DT40WT20 On\/Off Digital Heating Control","description":"\u003cdiv class=\"product-description\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eHoneywell Home DT4 White Wired Room Thermostat DT40WT20\u003c\/strong\u003e is a slim, modern digital thermostat for precise room temperature control in homes and apartments. Featuring a large clear LED segment display with energy-efficient auto-off and simple wake-up button, it delivers reliable performance with contemporary styling.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnergy-saving LED display\u003c\/strong\u003e automatically dims when not in use to extend battery life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBacklit touch buttons\u003c\/strong\u003e for easy operation in all lighting conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in eco offset\u003c\/strong\u003e reduces temperature for set periods to save energy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFuzzy logic control\u003c\/strong\u003e optimises boiler cycling for accurate temperature maintenance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible with hybrid systems\u003c\/strong\u003e including heat pumps, zoning, underfloor heating, and zone valves.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrost protection\u003c\/strong\u003e maintains minimum 5 °C when off to prevent pipe freezing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Choose Honeywell Home DT4 White?\u003c\/h2\u003e\n\u003cp\u003eCombines modern aesthetics with proven reliability, offering simple user operation alongside advanced energy-saving features and wide system compatibility.\u003c\/p\u003e\n\u003cp\u003eErP Class IV (+2%) rating meets current heating control efficiency standards with 5-year installer warranty option.\u003c\/p\u003e\n\u003ch2\u003eSuitable For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGas boilers, combi boilers, heat pumps\u003c\/strong\u003e (24-230 V on\/off control).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZone valve systems\u003c\/strong\u003e and multi-zone heating applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNew builds and replacements\u003c\/strong\u003e requiring wired wall-mounted thermostats.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBrand: \u003cstrong\u003eHoneywell Home by Resideo\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eModel: \u003cstrong\u003eDT4 White Wired Room Thermostat\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMPN: \u003cstrong\u003eDT40WT20\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eGTIN: \u003cstrong\u003e5059085002619\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eControl Type: \u003cstrong\u003eOn\/Off (24-230 V)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePower Supply: \u003cstrong\u003e2 x AA batteries (included)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eBattery Life: \u003cstrong\u003eApprox. 3.5 years\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSet Point Range: \u003cstrong\u003e5 °C to 35 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDisplay Range: \u003cstrong\u003e0 °C to 40 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSensor Type: \u003cstrong\u003e10k NTC @ 25 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSwitching Capacity: \u003cstrong\u003e3 A resistive, 1 A inductive\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eSwitch Type: \u003cstrong\u003eSPDT\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eErP Class: \u003cstrong\u003eClass IV (+2 %)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eDimensions: \u003cstrong\u003e101 x 101 x 23 mm (HxWxD)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWeight: \u003cstrong\u003e0.245 kg\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eTerminals: \u003cstrong\u003eUp to 2.5 mm²\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWarranty: \u003cstrong\u003e2 years standard (5 years installer option)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation \u0026amp; Operation\u003c\/h2\u003e\n\u003cp\u003eWall-mounted wired installation with flip-up wiring platform for simple connection. User-friendly menu for heating\/cooling selection, eco settings, and frost protection. Installer configuration includes cycle rate, limits, and system commissioning options.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":62799311929693,"sku":"DT40WT20","price":33.9,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/dt40wt20-HoneywellHomeDT4WhiteWiredRoomThermostat.jpg?v=1764922298","url":"https:\/\/qualityheating.co.uk\/products\/honeywell-home-dt4-white-wired-room-thermostat-dt40wt20-on-off-digital-heating-control","provider":"AIZO Quality Heating","version":"1.0","type":"link"}