{"product_id":"honeywell-home-t4r-7-day-wireless-programmable-room-thermostat-y4h910rf4003-smart-heating-control","title":"Honeywell Home T4R 7-Day Wireless Programmable Room Thermostat | Y4H910RF4003 Smart Heating Control","description":"\u003cdiv class=\"product-description\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eHoneywell Home T4R 7-Day Wireless Programmable Room Thermostat Y4H910RF4003\u003c\/strong\u003e delivers automatic time and temperature control for domestic heating systems with wireless thermostat and receiver operation. Featuring TPI energy-saving control, optimisation algorithms, and large LCD display with up to 6 daily temperature changes across 7-day, 5\/2, or single-day programmes.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWireless RF communication\u003c\/strong\u003e 30m range between thermostat and receiver box.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTPI (Temporary Proportional Integral) control\u003c\/strong\u003e reduces boiler cycling for efficiency.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimum start\/stop and delayed start\u003c\/strong\u003e learns room heating characteristics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-bound thermostat\/receiver\u003c\/strong\u003e - no binding setup required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAway mode with holiday function\u003c\/strong\u003e (1-99 days) and adjustable frost protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge LCD display\u003c\/strong\u003e with optional backlight and burner ON symbol.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Choose Honeywell T4R?\u003c\/h2\u003e\n\u003cp\u003eModern replacement for traditional wired thermostats with advanced energy-saving algorithms and simple programming via intuitive on-screen menus.\u003c\/p\u003e\n\u003cp\u003eErP Class IV rating ensures compliance while delivering precise control for combi boilers and zoned systems.\u003c\/p\u003e\n\u003ch2\u003eSuitable For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e24-230V on\/off appliances\u003c\/strong\u003e (gas boilers, combi-boilers, zone valves).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eS\/Y Plan systems\u003c\/strong\u003e and S Plan Plus additional zones.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCombination boiler installations\u003c\/strong\u003e requiring volt-free switching.\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\u003eT4R Wireless Programmable Thermostat\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMPN: \u003cstrong\u003eY4H910RF4003 \/ T4H910RF4003\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eRF Frequency: \u003cstrong\u003e868 MHz\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eThermostat Power: \u003cstrong\u003e2 x AA alkaline batteries (included)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eReceiver Power: \u003cstrong\u003e230 V AC 50 Hz\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eContact Rating: \u003cstrong\u003eVolt-free 5(3)A @ 230V AC\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 50 °C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eProgramming: \u003cstrong\u003e7-day, 5\/2-day, or 1-day (4-6 periods\/day)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eThermostat Dimensions: \u003cstrong\u003e97 x 136 x 62 mm (HxWxD)\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eReceiver Dimensions: \u003cstrong\u003e110 x 110 x 40 mm\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eErP Class: \u003cstrong\u003eClass IV\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eWarranty: \u003cstrong\u003e1 year\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation \u0026amp; Operation\u003c\/h2\u003e\n\u003cp\u003eThree-step installation: wire receiver, power up and test, configure thermostat. Supports automatic summer\/winter time change, temporary overrides, and full installer menu for cycle rate, limits, and system parameters.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Honeywell","offers":[{"title":"Default Title","offer_id":62799449817437,"sku":"Y4H910RF4003","price":115.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/y4h910rf4003-t4r-HoneywellHomeT4R7DayWirelessProgrammableRoomThermostat.jpg?v=1764922030","url":"https:\/\/qualityheating.co.uk\/products\/honeywell-home-t4r-7-day-wireless-programmable-room-thermostat-y4h910rf4003-smart-heating-control","provider":"AIZO Quality Heating","version":"1.0","type":"link"}