{"product_id":"engo-e40-230w-230v-wired-zigbee-smart-thermostat","title":"ENGO E40-230W 230V Wired ZigBee Smart Thermostat","description":"\u003c!-- SEO Product Name: ENGO E40-230W 230V Wired ZigBee Smart Thermostat - White --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; line-height:1.6; color:#1A1A1A; font-family:Arial, Helvetica, sans-serif;\"\u003e\n\u003cp\u003e\u003cstrong\u003eENGO E40-230W\u003c\/strong\u003e is a \u003cstrong\u003e230V AC wired ZigBee 3.0 \/ 868MHz smart thermostat\u003c\/strong\u003e, built for installers who want a mains-powered controller without the wiring complexity of a hard-wired relay system. It shares its wireless architecture and up-to-6-valve radiator control with the battery-powered E40-BAT, but takes its power directly from the 230V supply rather than from batteries, making it a good fit for permanent installations where a mains feed is already available. The compact \u003cstrong\u003e80 x 80 x 22mm\u003c\/strong\u003e surface-mounted body and clear LCD display keep the finished installation neat and easy to read. Available in white.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; gap:10px; margin:24px 0;\"\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#FFFFFF; border-radius:8px; padding:16px 10px; text-align:center;\"\u003e\n\u003cdiv style=\"font-weight:700; line-height:1.2; font-size:20px;\"\u003e230V AC\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; margin-top:4px; opacity:0.95;\"\u003ePower supply\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#FFFFFF; border-radius:8px; padding:16px 10px; text-align:center;\"\u003e\n\u003cdiv style=\"font-weight:700; line-height:1.2; font-size:20px;\"\u003e3(1)A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; margin-top:4px; opacity:0.95;\"\u003eMax. load\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#FFFFFF; border-radius:8px; padding:16px 10px; text-align:center;\"\u003e\n\u003cdiv style=\"font-weight:700; line-height:1.2; font-size:20px;\"\u003e5-45°C\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; margin-top:4px; opacity:0.95;\"\u003eSetpoint range\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#FFFFFF; border-radius:8px; padding:16px 10px; text-align:center;\"\u003e\n\u003cdiv style=\"font-weight:700; line-height:1.2; font-size:20px;\"\u003e±0.5°C\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; margin-top:4px; opacity:0.95;\"\u003eDisplay accuracy\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#FFFFFF; border-radius:8px; padding:16px 10px; text-align:center;\"\u003e\n\u003cdiv style=\"font-weight:700; line-height:1.2; font-size:20px;\"\u003eUp to 6\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; margin-top:4px; opacity:0.95;\"\u003eRadiator valves controlled\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1; min-width:130px; background:#008377CF; color:#FFFFFF; border-radius:8px; padding:16px 10px; text-align:center;\"\u003e\n\u003cdiv style=\"font-weight:700; line-height:1.2; font-size:20px;\"\u003e80x80x23mm\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; margin-top:4px; opacity:0.95;\"\u003eDimensions\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left:4px solid #C0392B; background:#FDEDEC; padding:14px 16px; margin:18px 0; border-radius:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#C0392B; margin-bottom:4px;\"\u003eMains wiring must be carried out by a qualified electrician\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; line-height:1.5;\"\u003eThis thermostat is powered directly from the 230V AC mains supply. Installation and wiring must be carried out by a person with appropriate electrical qualifications, in accordance with the wiring regulations in force in the country of installation (including \u003cstrong\u003eBS 7671\u003c\/strong\u003e in the UK).\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left:4px solid #B9770E; background:#FEF5E7; padding:14px 16px; margin:18px 0; border-radius:4px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#B9770E; margin-bottom:4px;\"\u003eZigBee gateway required for full remote control\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; line-height:1.5;\"\u003eAs with the rest of the ENGO Smart ecosystem, remote scheduling and app control via ENGO Smart requires a compatible \u003cstrong\u003eZigBee gateway\u003c\/strong\u003e, purchased separately. Local operation, scheduling, and ENGO binding to receivers or valve heads do not require a gateway.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-weight:700; font-size:18px; color:#008377CF; margin:32px 0 12px 0;\"\u003eKey Features\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; gap:12px; margin:20px 0;\"\u003e\n\u003cdiv style=\"background:#F7FBFA; border:1px solid #E0EDEB; border-radius:8px; padding:16px; flex:1; min-width:220px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eMains-powered with no batteries to replace\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; line-height:1.5;\"\u003eTaking its supply directly from 230V AC means there are no batteries to monitor or replace over the life of the installation, which suits permanent fixed installations better than a battery unit.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#F7FBFA; border:1px solid #E0EDEB; border-radius:8px; padding:16px; flex:1; min-width:220px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eControls up to six radiator valves from one thermostat\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; line-height:1.5;\"\u003eA single E40-230 can command up to \u003cstrong\u003esix electronic radiator valve heads\u003c\/strong\u003e over the 868MHz link, giving one thermostat control over every radiator in a larger or open-plan room.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#F7FBFA; border:1px solid #E0EDEB; border-radius:8px; padding:16px; flex:1; min-width:220px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eVolt-free COM\/NO output for flexible wiring\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; line-height:1.5;\"\u003eThe thermostat's control output is a potential-free COM\/NO relay with a configurable relay type, so installers can adapt it to different boiler, pump, or actuator control circuits without additional interface hardware.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#F7FBFA; border:1px solid #E0EDEB; border-radius:8px; padding:16px; flex:1; min-width:220px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eTPI, hysteresis and Delta RCWC control algorithms\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; line-height:1.5;\"\u003eTemperature is held using a \u003cstrong\u003eTPI algorithm\u003c\/strong\u003e, adjustable hysteresis (±0.2°C to ±2°C), or Delta RCWC, letting the installer match the control behaviour to the heat emitter and building fabric.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#F7FBFA; border:1px solid #E0EDEB; border-radius:8px; padding:16px; flex:1; min-width:220px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eWorks offline as well as with the ENGO Smart app\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; line-height:1.5;\"\u003eTime schedules are stored on the thermostat and continue to run without an internet connection, with remote access and app control available once a ZigBee gateway is added to the system.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#F7FBFA; border:1px solid #E0EDEB; border-radius:8px; padding:16px; flex:1; min-width:220px;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:6px;\"\u003eCompact, surface-mounted 22mm-deep body\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; line-height:1.5;\"\u003eThe 80 x 80 x 22mm enclosure mounts straight to the wall surface without chasing in a back box, keeping installation quick on both new builds and retrofit radiator or underfloor heating jobs.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-weight:700; font-size:18px; color:#008377CF; margin:32px 0 12px 0;\"\u003eTechnical Specification\u003c\/p\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse; margin:20px 0; font-size:14px;\"\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF; color:#FFFFFF; font-weight:700; padding:8px 12px; font-size:14px;\"\u003ePower \u0026amp; Switching\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr style=\"background:#F7FBFA;\"\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #E0EDEB; font-weight:700; width:45%;\"\u003ePower supply\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #E0EDEB;\"\u003e230V AC, 50Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #E0EDEB; font-weight:700; width:45%;\"\u003eMax. load\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #E0EDEB;\"\u003e3(1)A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#F7FBFA;\"\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #E0EDEB; font-weight:700; width:45%;\"\u003eControl output\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #E0EDEB;\"\u003eCOM\/NO, voltage free\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF; color:#FFFFFF; font-weight:700; padding:8px 12px; font-size:14px;\"\u003eTemperature Control\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr style=\"background:#F7FBFA;\"\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #E0EDEB; font-weight:700; width:45%;\"\u003eSetpoint range\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #E0EDEB;\"\u003e5.0°C to 45.0°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #E0EDEB; font-weight:700; width:45%;\"\u003eDisplay accuracy\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #E0EDEB;\"\u003e0.5°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#F7FBFA;\"\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #E0EDEB; font-weight:700; width:45%;\"\u003eControl algorithm\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #E0EDEB;\"\u003eTPI, hysteresis (±0.2°C to ±2°C), Delta RCWC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF; color:#FFFFFF; font-weight:700; padding:8px 12px; font-size:14px;\"\u003eConnectivity\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr style=\"background:#F7FBFA;\"\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #E0EDEB; font-weight:700; width:45%;\"\u003eCommunication\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #E0EDEB;\"\u003eZigBee 3.0, Radio 868MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #E0EDEB; font-weight:700; width:45%;\"\u003eRadiator valve support\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #E0EDEB;\"\u003eUp to 6 electronic radiator valve heads\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#F7FBFA;\"\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #E0EDEB; font-weight:700; width:45%;\"\u003eApp platform\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #E0EDEB;\"\u003eENGO Smart (ZigBee gateway required for remote\/app control)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF; color:#FFFFFF; font-weight:700; padding:8px 12px; font-size:14px;\"\u003ePhysical\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr style=\"background:#F7FBFA;\"\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #E0EDEB; font-weight:700; width:45%;\"\u003eDimensions\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #E0EDEB;\"\u003e80 x 80 x 22mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #E0EDEB; font-weight:700; width:45%;\"\u003eMounting\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #E0EDEB;\"\u003eSurface-mounted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#F7FBFA;\"\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #E0EDEB; font-weight:700; width:45%;\"\u003eColour\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #E0EDEB;\"\u003ewhite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp style=\"font-weight:700; font-size:18px; color:#008377CF; margin:32px 0 12px 0;\"\u003eFrequently Asked Questions\u003c\/p\u003e\n\u003cdiv style=\"margin:20px 0;\"\u003e\n\u003cdetails style=\"margin-bottom:10px; border:1px solid #E0EDEB; border-radius:6px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; font-weight:700; padding:12px 16px; cursor:pointer; list-style:none;\"\u003eDoes this thermostat need a gateway to work?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14px; line-height:1.6;\"\u003eNo gateway is required for local scheduling and ENGO binding to receivers or radiator valves. A ZigBee gateway is needed for remote control and app scheduling via ENGO Smart.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"margin-bottom:10px; border:1px solid #E0EDEB; border-radius:6px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; font-weight:700; padding:12px 16px; cursor:pointer; list-style:none;\"\u003eHow many radiator valves can one E40-230 control?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14px; line-height:1.6;\"\u003eUp to six electronic radiator valve heads can be linked to a single E40-230, allowing one thermostat to manage every radiator in a room.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"margin-bottom:10px; border:1px solid #E0EDEB; border-radius:6px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; font-weight:700; padding:12px 16px; cursor:pointer; list-style:none;\"\u003eIs this thermostat suitable for underfloor heating as well as radiators?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14px; line-height:1.6;\"\u003eYes, the E40-230 is compatible with both underfloor heating and radiator heating systems via the appropriate ENGO receiver or valve head.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"margin-bottom:10px; border:1px solid #E0EDEB; border-radius:6px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; font-weight:700; padding:12px 16px; cursor:pointer; list-style:none;\"\u003eWhat is the maximum load the relay can switch?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14px; line-height:1.6;\"\u003eThe volt-free COM\/NO output is rated to 3(1)A. For higher-current loads such as electric heating mats, an external contactor or the higher-rated EONE-16 thermostat should be used instead.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"margin-bottom:10px; border:1px solid #E0EDEB; border-radius:6px; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#FFFFFF; font-weight:700; padding:12px 16px; cursor:pointer; list-style:none;\"\u003eCan the schedule still run if the internet or gateway goes down?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14px; line-height:1.6;\"\u003eYes. Time schedules are stored on the thermostat itself and continue to run in offline mode without an active internet or gateway connection.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"ENGO Controls","offers":[{"title":"Default Title","offer_id":65244847178077,"sku":"E40-230W","price":49.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/ENGOE40-BATWBatteryPoweredZigBeeSmartThermostat-White.jpg?v=1783954231","url":"https:\/\/qualityheating.co.uk\/products\/engo-e40-230w-230v-wired-zigbee-smart-thermostat","provider":"AIZO Quality Heating","version":"1.0","type":"link"}