{"product_id":"eph-cp4d-opentherm-programmable-rf-thermostat","title":"EPH CP4D – OpenTherm Programmable RF Thermostat","description":"\u003cp\u003eThe \u003cstrong\u003eEPH CP4D RF Programmable Dial Thermostat\u003c\/strong\u003e is a \u003cstrong\u003ewireless OpenTherm programmable room thermostat with intuitive dial control\u003c\/strong\u003e, paired with an RF receiver for single-zone boiler control. It combines a large backlit display and handwheel temperature adjustment with \u003cstrong\u003eBoiler Plus compliant load-compensating control\u003c\/strong\u003e, helping improve comfort and efficiency.\u003c\/p\u003e\n\u003ch2\u003eWhy Buy the EPH CP4D RF Thermostat?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntuitive handwheel dial\u003c\/strong\u003e for quick, precise temperature changes with a clear digital display.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOpenTherm modulation and TPI control\u003c\/strong\u003e to reduce boiler cycling and optimise efficiency.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully programmable RF thermostat\u003c\/strong\u003e with multiple time and temperature periods each day.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoiler Plus compliant\u003c\/strong\u003e control strategy meeting current efficiency regulations.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrost protection, boost and holiday modes\u003c\/strong\u003e for all-season protection and convenience.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre‑paired thermostat and receiver\u003c\/strong\u003e for straightforward wireless installation.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSuitable For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCombi and system boilers needing an \u003cstrong\u003eOpenTherm‑capable wireless programmable stat\u003c\/strong\u003e.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eUsers who prefer \u003cstrong\u003edial-based temperature control\u003c\/strong\u003e with modern programmable features.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eRetrofit upgrades from basic on\/off stats to \u003cstrong\u003eBoiler Plus compliant RF controls\u003c\/strong\u003e.\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHomes aiming to \u003cstrong\u003eimprove efficiency and comfort\u003c\/strong\u003e with time\/temperature zoning on a main circuit.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable border=\"1\" cellpadding=\"5\" cellspacing=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eWireless programmable dial room thermostat with RF receiver\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Range\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eApprox. 5–35°C adjustable setpoint\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Modes\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eAutomatic, manual, off, holiday, boost\u003c\/strong\u003e with TPI and OpenTherm options.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProgramming\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eMultiple daily time\/temperature periods\u003c\/strong\u003e with 24‑hour, 5\/2‑day or 7‑day modes.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrost Protection\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eAdjustable frost setting\u003c\/strong\u003e active in off and holiday modes.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eThermostat Power\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eBattery powered\u003c\/strong\u003e with AA alkaline cells, low‑battery indication.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReceiver Power\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eMains‑powered RF receiver\u003c\/strong\u003e for boiler switching.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Contacts\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eVolt‑free contacts\u003c\/strong\u003e suitable for most boilers and OpenTherm terminals.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eLarge backlit LCD\u003c\/strong\u003e showing setpoint, room temperature and status.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eWall‑mounted thermostat and receiver\u003c\/strong\u003e, portable use possible with stand where supplied.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical Warranty\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eExtended multi‑year manufacturer warranty\u003c\/strong\u003e (check pack for exact duration).\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"EPH Controls","offers":[{"title":"Default Title","offer_id":62767197618525,"sku":"CP4D","price":67.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/EPHCP4DOpenThermProgrammableRFThermostat.jpg?v=1764667409","url":"https:\/\/qualityheating.co.uk\/products\/eph-cp4d-opentherm-programmable-rf-thermostat","provider":"AIZO Quality Heating","version":"1.0","type":"link"}