{"product_id":"bosch-rt800-wired-room-thermostat-mpn-7738112961-colour-touch-display-with-humidity-sensor","title":"Bosch RT800 Wired Room Thermostat – MPN 7738112961 – Colour Touch Display with Humidity Sensor","description":"\u003cdiv style=\"font-family: Arial, sans-serif; color: #1a1a1a; max-width: 900px; line-height: 1.7;\"\u003e\n\n  \u003c!-- Intro --\u003e\n  \u003cp style=\"font-size: 15px;\"\u003eThe \u003cstrong\u003eBosch RT800\u003c\/strong\u003e is a wired programmable room thermostat with a \u003cstrong\u003e2.4\" colour TFT touch display\u003c\/strong\u003e, built-in humidity sensor, and a clean, modern design. It connects directly to the boiler via the EMS bus — no batteries, no WiFi required for basic operation — giving \u003cstrong\u003einstant, reliable temperature and schedule control\u003c\/strong\u003e from the wall. Up to four RT800s can be integrated in a single system for \u003cstrong\u003emulti-zone heating control\u003c\/strong\u003e across up to four independent circuits.\u003c\/p\u003e\n\n  \u003cp style=\"font-size: 15px;\"\u003eFor homeowners who want remote access, the RT800 is compatible with the \u003cstrong\u003eBosch HomeCom Easy app\u003c\/strong\u003e when paired with the Connect Key K30 or K40 gateway (sold separately). This enables full remote monitoring and control via smartphone — ideal for second homes, rental properties, or everyday convenience. Compatible with Worcester Bosch Greenstar gas and oil boilers, and Bosch CS7800i heat pumps.\u003c\/p\u003e\n\n  \u003c!-- Badge strip --\u003e\n  \u003cdiv style=\"display: flex; flex-wrap: wrap; gap: 8px; margin: 22px 0;\"\u003e\n    \u003cspan style=\"background: #008377CF; color: #fff; padding: 7px 13px; border-radius: 20px; font-size: 12px; font-weight: bold;\"\u003eMPN: 7738112961\u003c\/span\u003e\n    \u003cspan style=\"background: #008377CF; color: #fff; padding: 7px 13px; border-radius: 20px; font-size: 12px; font-weight: bold;\"\u003eEAN: 4062321612122\u003c\/span\u003e\n    \u003cspan style=\"background: #008377CF; color: #fff; padding: 7px 13px; border-radius: 20px; font-size: 12px; font-weight: bold;\"\u003e2.4\" Colour TFT Display\u003c\/span\u003e\n    \u003cspan style=\"background: #008377CF; color: #fff; padding: 7px 13px; border-radius: 20px; font-size: 12px; font-weight: bold;\"\u003eHumidity Sensor\u003c\/span\u003e\n    \u003cspan style=\"background: #008377CF; color: #fff; padding: 7px 13px; border-radius: 20px; font-size: 12px; font-weight: bold;\"\u003eUp to 4-Zone\u003c\/span\u003e\n    \u003cspan style=\"background: #008377CF; color: #fff; padding: 7px 13px; border-radius: 20px; font-size: 12px; font-weight: bold;\"\u003eApp-Ready\u003c\/span\u003e\n    \u003cspan style=\"background: #008377CF; color: #fff; padding: 7px 13px; border-radius: 20px; font-size: 12px; font-weight: bold;\"\u003eBoiler Plus Compliant\u003c\/span\u003e\n    \u003cspan style=\"background: #008377CF; color: #fff; padding: 7px 13px; border-radius: 20px; font-size: 12px; font-weight: bold;\"\u003e2-Year Warranty\u003c\/span\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- Specifications --\u003e\n  \u003ch2 style=\"color: #fff; background: #008377CF; padding: 10px 16px; border-radius: 4px; font-size: 16px; margin: 28px 0 16px;\"\u003eTechnical Specifications\u003c\/h2\u003e\n\n  \u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 14px; margin-bottom: 24px;\"\u003e\n    \u003cthead\u003e\n      \u003ctr style=\"background: #008377CF; color: #fff;\"\u003e\n        \u003cth style=\"padding: 10px 12px; text-align: left; border: 1px solid #006b62;\"\u003eParameter\u003c\/th\u003e\n        \u003cth style=\"padding: 10px 12px; text-align: left; border: 1px solid #006b62;\"\u003eValue\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n    \u003ctbody\u003e\n      \u003ctr style=\"background: #f0faf9;\"\u003e\n        \u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eMPN \/ Product number\u003c\/td\u003e\n        \u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003e7738112961\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eEAN \/ GTIN\u003c\/td\u003e\n        \u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003e4062321612122\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background: #f0faf9;\"\u003e\n        \u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eDisplay\u003c\/td\u003e\n        \u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003e2.4\" TFT colour display with graphics and clear text\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eControls\u003c\/td\u003e\n        \u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003e7 touch buttons\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background: #f0faf9;\"\u003e\n        \u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eBuilt-in sensors\u003c\/td\u003e\n        \u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003eTemperature + humidity\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eConnection type\u003c\/td\u003e\n        \u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003eWired — EMS bus (powered via boiler)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background: #f0faf9;\"\u003e\n        \u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eMax heating circuits\u003c\/td\u003e\n        \u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003eUp to 4 (with up to 4 × RT800 thermostats)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eApp connectivity\u003c\/td\u003e\n        \u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003eHomeCom Easy app — via Connect Key K30 or K40 gateway (sold separately)\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background: #f0faf9;\"\u003e\n        \u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eMounting\u003c\/td\u003e\n        \u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003eWall mounted\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eColour\u003c\/td\u003e\n        \u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003eWhite\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background: #f0faf9;\"\u003e\n        \u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eDimensions (W × H × D)\u003c\/td\u003e\n        \u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003e95 × 116 × 21mm\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eNet weight\u003c\/td\u003e\n        \u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003e0.35 kg\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background: #f0faf9;\"\u003e\n        \u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eBoiler Plus compliance\u003c\/td\u003e\n        \u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003eYes — time and temperature control\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr\u003e\n        \u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eWarranty\u003c\/td\u003e\n        \u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003e2 years\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr style=\"background: #f0faf9;\"\u003e\n        \u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3; font-weight: bold;\"\u003eManufacturer\u003c\/td\u003e\n        \u003ctd style=\"padding: 9px 12px; border: 1px solid #c8e6e3;\"\u003eWorcester Bosch Group (Bosch Thermotechnology)\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\n  \u003c!-- Features grid --\u003e\n  \u003ch2 style=\"color: #fff; background: #008377CF; padding: 10px 16px; border-radius: 4px; font-size: 16px; margin: 28px 0 16px;\"\u003eKey Features\u003c\/h2\u003e\n\n  \u003cdiv style=\"display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 14px; margin-bottom: 24px;\"\u003e\n    \u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 14px 16px;\"\u003e\n      \u003cp style=\"margin: 0 0 5px; font-weight: bold; color: #008377CF; font-size: 14px;\"\u003e2.4\" colour touch display\u003c\/p\u003e\n      \u003cp style=\"margin: 0; font-size: 13px;\"\u003eThe full-colour TFT screen shows the current temperature, target setpoint, humidity reading, and schedule information at a glance. Seven touch buttons give direct access to all functions without navigating nested menus — straightforward for all household members to use.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 14px 16px;\"\u003e\n      \u003cp style=\"margin: 0 0 5px; font-weight: bold; color: #008377CF; font-size: 14px;\"\u003eWired — no batteries, no WiFi drops\u003c\/p\u003e\n      \u003cp style=\"margin: 0; font-size: 13px;\"\u003eThe RT800 is powered via the EMS bus connection to the boiler — no batteries to change, no wireless signal to lose. Direct wired control is more reliable than wireless in properties with thick walls or signal interference, and gives \u003cstrong\u003eimmediate response\u003c\/strong\u003e with no radio polling delay.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 14px 16px;\"\u003e\n      \u003cp style=\"margin: 0 0 5px; font-weight: bold; color: #008377CF; font-size: 14px;\"\u003eBuilt-in humidity sensor\u003c\/p\u003e\n      \u003cp style=\"margin: 0; font-size: 13px;\"\u003eDisplays live room humidity alongside temperature — useful for identifying damp, condensation risk, or air quality issues. Humidity monitoring is especially valuable in new-build properties or well-sealed homes where ventilation management is important.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 14px 16px;\"\u003e\n      \u003cp style=\"margin: 0 0 5px; font-weight: bold; color: #008377CF; font-size: 14px;\"\u003eUp to 4-zone multi-circuit control\u003c\/p\u003e\n      \u003cp style=\"margin: 0; font-size: 13px;\"\u003eUp to four RT800 thermostats can be connected to one boiler, each controlling an independent heating circuit — ideal for new builds, apartments, or larger properties with separate zone valves. Each zone has its own temperature target and weekly schedule.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 14px 16px;\"\u003e\n      \u003cp style=\"margin: 0 0 5px; font-weight: bold; color: #008377CF; font-size: 14px;\"\u003eHomeCom Easy app — optional remote access\u003c\/p\u003e\n      \u003cp style=\"margin: 0; font-size: 13px;\"\u003eWhen paired with the Bosch Connect Key K30 or K40 gateway (sold separately), the RT800 becomes fully app-controllable via the HomeCom Easy app on iOS and Android — no native WiFi required in the thermostat itself. Change setpoints, view temperatures, and adjust schedules from anywhere.\u003c\/p\u003e\n    \u003c\/div\u003e\n    \u003cdiv style=\"background: #f0faf9; border: 1px solid #c8e6e3; border-radius: 6px; padding: 14px 16px;\"\u003e\n      \u003cp style=\"margin: 0 0 5px; font-weight: bold; color: #008377CF; font-size: 14px;\"\u003eBoiler Plus compliant\u003c\/p\u003e\n      \u003cp style=\"margin: 0; font-size: 13px;\"\u003eThe RT800 satisfies the time and temperature control requirements of the Boiler Plus regulations (England) as a programmable room thermostat, making it a compliant replacement control for both new installations and boiler change-outs.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- Compatibility callout --\u003e\n  \u003cdiv style=\"background: #f0faf9; border-left: 4px solid #008377CF; padding: 12px 16px; margin: 0 0 18px; font-size: 14px; border-radius: 0 4px 4px 0;\"\u003e\n    \u003cstrong style=\"color: #008377CF;\"\u003eCompatibility:\u003c\/strong\u003e The RT800 is designed for use with \u003cstrong\u003eWorcester Bosch Greenstar\u003c\/strong\u003e gas and oil boilers and the \u003cstrong\u003eBosch CS7800i\u003c\/strong\u003e heat pump range via the EMS bus connection. It is not a simple volt-free switching thermostat — confirm EMS bus compatibility before ordering for use with non-Bosch appliances. For app connectivity, the \u003cstrong\u003eConnect Key K30\u003c\/strong\u003e (RF, plugs into boiler) or \u003cstrong\u003eK40 gateway\u003c\/strong\u003e (Ethernet) must be ordered separately.\n  \u003c\/div\u003e\n\n  \u003c!-- Related products footer --\u003e\n  \u003cdiv style=\"background: #008377CF; color: #fff; padding: 16px 20px; border-radius: 4px; margin-top: 32px; font-size: 14px; line-height: 1.9;\"\u003e\n    \u003cstrong\u003eRelated Products:\u003c\/strong\u003e\u003cbr\u003e\n    Bosch Connect Key K30 RF Gateway | Bosch Connect Key K40 Gateway | Worcester Bosch Greenstar 4000 Boiler | Worcester Bosch Greenstar 8000+ Boiler | Bosch CS7800i Air Source Heat Pump\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Worcester Bosch","offers":[{"title":"Default Title","offer_id":63899862991197,"sku":"7738112961","price":117.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/7738112961-worcester-bosch-rt800.jpg?v=1773812586","url":"https:\/\/qualityheating.co.uk\/products\/bosch-rt800-wired-room-thermostat-mpn-7738112961-colour-touch-display-with-humidity-sensor","provider":"AIZO Quality Heating","version":"1.0","type":"link"}