<br><br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
AIUI from comments made earlier, there is no backend unless you want one. The TRVs themselves do all the work, and communicate (via low power wireless) to a relay box which you wire to the boiler.<br>
So when one or more TRVs signal that heat is needed, the relay box will turn on the boiler, and when all the TRVs are satisfied that no more heat is needed, the boiler turns off again.<br></blockquote><div> </div><div>Okay it's interesting. For me much of the value would be in having a management hub. It gives me the main use cases I'm looking for and for me is the real selling point of a smart Trv. Without it I expect it'll be a bit like my current trv's when I don't monitor or adjust them and just rely on the central thermostat.</div><div><br></div><div>If the system is a closed loop then how do you integrate with it? How can I pull stats from the trv's about temperature, state, etc and push new configuration to it from, say, a web backend? And will I be able to pull any stats from the relay or is it not much more than a relay?</div><div><br></div><div>Thanks,</div><div><br></div><div><br></div><div>Graham</div>