{"product_id":"engo-eone-16w-wi-fi-smart-thermostat-16a-relay-230v-underfloor-heating-black","title":"ENGO EONE-16W Wi-Fi Smart Thermostat 16A Relay 230V Underfloor Heating - Black","description":"\u003c!-- SEO Product Name: ENGO EONE-16B Wi-Fi Smart Thermostat 16A Relay 230V Underfloor Heating - Black --\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 EONE-16B\u003c\/strong\u003e is a flush-mounted \u003cstrong\u003eWi-Fi smart thermostat with a built-in 16(2)A relay\u003c\/strong\u003e, engineered for \u003cstrong\u003eunderfloor heating\u003c\/strong\u003e and \u003cstrong\u003eelectric heating mats\u003c\/strong\u003e that draw higher current than a standard low-voltage sensor circuit can switch. Because the relay is rated to 16A, it can drive many electric heating mats directly without an external contactor, simplifying the installation and reducing the parts list on straightforward single-zone jobs. The thermostat combines \u003cstrong\u003eWi-Fi 2.4GHz\u003c\/strong\u003e and \u003cstrong\u003eMODBUS RS-485\u003c\/strong\u003e communication, giving installers a choice between app-based control via the ENGO Smart platform or integration into a wider building management system. Available in black.\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;\"\u003e16(2)A\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; margin-top:4px; opacity:0.95;\"\u003eMax. switching current\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;\"\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;\"\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;\"\u003e13mm\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; margin-top:4px; opacity:0.95;\"\u003eDepth after mounting\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;\"\u003eWi-Fi + Modbus\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px; margin-top:4px; opacity:0.95;\"\u003eCommunication\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;\"\u003eInstallation must be carried out by a qualified electrician\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; line-height:1.5;\"\u003eThis thermostat switches mains voltage at up to 16(2)A. Installation must be performed 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). ENGO Controls accepts no responsibility for non-compliant installation.\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;\"\u003eFloor sensor strongly recommended for electric heating mats\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px; line-height:1.5;\"\u003eWhen switching an electric heating mat, ENGO recommends fitting a \u003cstrong\u003efloor temperature sensor\u003c\/strong\u003e to the S1-S2 input to provide overheating protection. The maximum load of 16(2)A must not be exceeded by the connected heating mat or actuator.\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;\"\u003e16A relay removes the need for a contactor\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; line-height:1.5;\"\u003eMost low-voltage UFH thermostats top out at 3A and require a separate contactor to switch an electric heating mat. The \u003cstrong\u003ebuilt-in 16(2)A relay\u003c\/strong\u003e in the EONE-16 handles that load directly, cutting an extra component and a wiring step out of straightforward single-zone electric UFH jobs.\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 algorithm holds setpoint tightly\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; line-height:1.5;\"\u003eThe \u003cstrong\u003eTPI (Time Proportional and Integral) control algorithm\u003c\/strong\u003e pulses the relay on and off in short bursts rather than simple on\/off switching, which keeps floor temperature closer to setpoint and reduces the temperature swing that a basic hysteresis thermostat would allow.\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 fully offline as well as via the app\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; line-height:1.5;\"\u003eSchedules are stored on the thermostat itself, so daily or weekly heating programmes keep running even if the home Wi-Fi network or internet connection drops out. Wi-Fi is only needed for remote access and initial setup via the \u003cstrong\u003eENGO Smart app\u003c\/strong\u003e.\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;\"\u003eS1-S2 input adapts to three different sensor roles\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; line-height:1.5;\"\u003eThe same volt-free input can be configured as a floor sensor, an air sensor, or an occupancy sensor input (for example a hotel key-card switch), letting one hardware design cover several different installation scenarios via the installer parameters.\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;\"\u003eMODBUS RS-485 for BMS integration\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; line-height:1.5;\"\u003eAlongside Wi-Fi, the thermostat carries a MODBUS RS-485 port, making it suitable for installations that need to report into a building management system rather than (or as well as) a consumer smart-home app.\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;\"\u003eUltra-slim 13mm finished depth\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px; line-height:1.5;\"\u003eOnce mounted into a standard 60mm flush electrical box, the visible depth of the thermostat is just 13mm, keeping the finished fascia close to the wall for a discreet, modern appearance.\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. switching current\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #E0EDEB;\"\u003e16(2)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;\"\u003eSL, 230V AC\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, or hysteresis (±0.2°C to ±2.0°C)\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;\"\u003eWi-Fi 2.4GHz, MODBUS RS-485\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%;\"\u003eS1-S2 input\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #E0EDEB;\"\u003eFloor sensor \/ air sensor \/ occupancy sensor (NTC 10\/12\/15kΩ)\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 input\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #E0EDEB;\"\u003eCO\/NSB, 230V AC (heat\/cool changeover or night setback)\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%;\"\u003eApp platform\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #E0EDEB;\"\u003eENGO Smart (powered by Tuya)\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;\"\u003e90 x 90 x 37mm (13mm after flush mounting in a Ø60 box)\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;\"\u003eFlush-mounted, standard 60mm electrical box\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;\"\u003eblack\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;\"\u003eCompliance\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%;\"\u003eEU directives\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px; border-bottom:1px solid #E0EDEB;\"\u003e2014\/53\/EU, 2011\/65\/EU\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;\"\u003eDo I need a floor sensor with this thermostat?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14px; line-height:1.6;\"\u003eA floor sensor connected to the S1-S2 input is recommended when the EONE-16 is switching an electric heating mat, as it provides overheating protection that a room-only sensor cannot.\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 EONE-16 switch an electric heating mat directly, without a contactor?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14px; line-height:1.6;\"\u003eIn most cases, yes. The internal relay is rated to 16(2)A, which covers many electric heating mat circuits without an external contactor, provided the mat's load does not exceed this rating.\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;\"\u003eWill the thermostat keep working if my Wi-Fi goes down?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14px; line-height:1.6;\"\u003eYes. Time schedules are stored locally on the thermostat and continue to run in offline mode. Wi-Fi is only required for remote control and setup through the ENGO Smart app.\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 this thermostat control heating and cooling?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14px; line-height:1.6;\"\u003eYes, via the CO input, which can be configured for automatic heating\/cooling changeover or, alternatively, for a night setback (NSB) function.\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;\"\u003eDoes this thermostat need a separate gateway or hub?\u003c\/summary\u003e\u003cdiv style=\"padding:14px 16px; font-size:14px; line-height:1.6;\"\u003eNo gateway is required for basic Wi-Fi and app operation. The MODBUS RS-485 port is available for installers who want to integrate the thermostat into a wider building management system.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"ENGO Controls","offers":[{"title":"Default Title","offer_id":65220444914013,"sku":"EONE-16B","price":68.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/ENGOEONE-16WWi-FiSmartThermostat16ARelay230VUnderfloorHeating-Black.jpg?v=1783703010","url":"https:\/\/qualityheating.co.uk\/products\/engo-eone-16w-wi-fi-smart-thermostat-16a-relay-230v-underfloor-heating-black","provider":"AIZO Quality Heating","version":"1.0","type":"link"}