2 Pack SONOFF Zigbee Thermostatic Radiator Valve, TRVZB, Add-On Smart Radiator Valve For Smart Home Control, Easy Installation, Save Heating Costs, Works With Alexa, Google Home

I've been using SONOFF products for a number of years now and in operation they have proved themselves to be rugged and reliable in all sorts of applications. I chose their TRV ZB valves to enable me to have an individual heating zone for each radiator. To achieve this I use the Sonoff iHost for local control and various types of Sonoff Wi-Fi switches to call for heat from the boiler (switch the boiler on or off). In essence each TRV ZB acts as a 'Master' and has a 'Slave' Sonoff Wi-Fi Switch associated with it. When the TRV ZB goes to 'Heating' status it causes its associated slave switch to fire up the boiler. The switches that I use as 'Slaves' have clean volt free contacts model 4CH PRO. It will take some time with a simple thermometer to set up these TRV ZBs to give the desired room comfort temperature level. The effort is worth it though as since installing my system I have noticed much better comfort- not too hot or too cold and seen a reduction in my heating system gas consumption and of course once set up the operation is fully automatic. The TRV ZBs come with several valve adapters but I had a couple of valves (Myson) that adapters were not available for so those valves had to be changed to a type that will take the TRV ZB. The valves are battery (3x AA) operated and very quiet in operation. They are very controllable- I'm using the SONOFF iHost with standard firmware in every device. In using these devices I've identified features that I would find desirable in future developments for the product and Sonoff/ eWelink actually encourage and listen to feedback from customers via the eWelink forum. In summary this is a very competitvly priced smart TRV that will enable DIY ers without deep coding skills to build an automated central heating system.

I now have these on every radiator in the house, all accessible through the eWeLink app and integrated with Alexa. They really are excellent, they come with a full set of adaptors to match existing TRV bodies, easy setup and nice clear digital display. I read negative comments about the temperature reading that the TRVs give. I think it is unavoidable that a temperature sensor located right next to the radiator is going to be inaccurate. I bought a handful of Sonoff temp/humidity sensors and have one in each room. I then use the eWeLink app and Alexa to control the TRVs based on the reading given by the Sonoffs rather than the TRV temp sensors. Compared to other systems, these are a great price for the quality, and they are often on an Amazon sale offer.

The product is awesome and works perfectly, but there’s one downside—there’s no way to directly connect an external temperature sensor. Because of this, I’m giving it 4 stars.

I have a mix of Hive and Sonoff TRVs. Personally I prefer the Sonoffs as they are less fiddly to control via Home Assistant than the Hive equivalents and take an extra battery (3 vs 2 in the Hives) and seem to have much more reliable and consistent battery life. For anyone struggling with connectivity…add some zigbee repeaters to your network (even a zigbee smart switch will act in this capacity). Makes a big difference. I haven’t had one of these drop off the network yet. For anyone not convinced by temperature readings…same as with the Hive units, the onboard temperature is pretty useless. This is inevitable when you have a thermometer attached to a heat source. They tend to report the room is up to temperature much quicker than it actually is. I use a zigbee thermometer in each room that has a TRV and ignore the temperature reported by the TRV. This gives a far more accurate reading of room temperature. I’m seriously considering selling off my Hive units and replacing with these.

So far so good, have to say I really like these & easy Alexa intergration. I live in a 2 bedroom flat and it's always annnoyed me that to put the central heating on I'm heating the whole flat despite the fact that I spend most of my mornings in my office / bedroom 2. I had the old style TRVs where you can manually turn them to turn off but a pain to keep remembering and doing. I bought a two pack and Installation took 10 minutes for the first one and 2 minutes for the second one as I knew what I was doing by now. I didn't need to use any of the 6 or so adapters that came with them, they screwed directly onto my radiator. As soon as it was on I pressed the top button, the display said "Ad." It whirred within and all was good. They take 3 x AA batteries and I can't comment on the lifespan as yet but very easy to replace when need be. Setup via the ewelink app. I already have a pair of sonoff curtain closers so have a sonoff hub for that & was aware of the little niggle in that you must switch off your 5GHz channel on your router for the devices to be found. Annoying, once paired you can switch the 5GHz back on. When ready, turn the button to off, Then hold it for 3 seconds and it goes into pairing mode. It does take around 30 - 60 seconds until it finds the device but once found it adds it straightaway and all works. So I now generally control via Alexa, turn the "Lounge Radiator to 25" but have a schedule set up to turn them both off at 12am and then they won't turn back on until I say so. So now when I get up, my heating kicks in 30 minutes before in the hall, bathroom & bedroom. Then when getting dressed I tell Alexa to turn the Cave radiator on. Love it. Will buy another two shortly.

Been very happy with these, the 3battery design has been a lot more reliable than the cheaper 2 battery generic alternative I tried. Doesnt appear to drop out and firmware upgrades periodically happen. For the price difference I wish I standardised on these earlier - more entities are exposed to home assistant too. Personally I like the tiny motor whir when the kick in or out, very reassuring. Have not decided yet if I prefer the gradual angle adjustment or hard on off method of control but they support both so I can continue to experiment if I want

Working great so far. Was worried that the batteries would run out quickly, but two months in the batteries are still almost full

Compré este cabezal termostático inteligente SONOFF para controlar mejor la temperatura de casa de forma remota y programada. 🔹 Aspectos positivos: ✔ Control sencillo: Se conecta fácilmente con Alexa y Google Home, permitiendo manejar la temperatura con comandos de voz. ✔ Pantalla LED clara: La lectura de la temperatura y los ajustes se hacen de forma muy intuitiva. ✔ Buena respuesta: La regulación de la temperatura es bastante precisa una vez configurado correctamente. 🔹 Aspectos a mejorar: ✔ Requiere Zigbee Hub: Sin un hub Zigbee 3.0 no funciona, lo que supone un gasto adicional si no lo tienes. ✔ Compatibilidad limitada: No se adapta bien a todas las válvulas de radiador, en algunos casos se necesita un adaptador adicional que no siempre viene incluido. En resumen, un buen producto para automatizar la calefacción, pero deberían mejorar la compatibilidad con más tipos de válvulas para facilitar la instalación.

Ich habe das SONOFF TRVZB Heizkörperthermostat gekauft, nachdem ich von Apple HomeKit auf Home Assistant umgestiegen bin. Wichtig war mir eine direkte Einbindung über Zigbee2MQTT, ohne Cloud-Zwang oder proprietäres Gateway – und genau das funktioniert hier einwandfrei. Die Einrichtung war in wenigen Minuten erledigt: Anlernmodus aktivieren, in Zigbee2MQTT hinzufügen, fertig. Seitdem läuft das Thermostat stabil, reagiert schnell auf Temperaturänderungen und lässt sich sowohl manuell am Gerät als auch über Automationen im Home Assistant steuern. Die Verarbeitungsqualität wirkt solide, das Display ist gut lesbar und die Bedienung selbsterklärend. Für alle, die Home Assistant oder andere Zigbee-Systeme nutzen, ist das SONOFF TRVZB eine klare Empfehlung: günstig, zuverlässig und einfach zu integrieren. 👍

Ik gebruik deze in combinatie met home assistant om een zone regeling in het huis toe te passen. Ze zijn inmiddels 3 weken in gebruik en ik ben erg te vreden, alleen was het wel noodzakelijk om van zha naar zibgee2mqtt over te stappen om updates te krijgen (OTA) en om de externe thermometer te kunnen koppelen. Since ik ben overgestapt werken ze alle 8 als een zonnetje!

Has worked without faults.