Does this get over the basic issue of normal TRV usage which requires the boiler to be 'on' 24 hours a day ?
i.e can it switch the boiler on when ANY TRV is calling for heat and leave it off the rest of the time ?
EDIT : RTFM !: Yes it does
"That implies thermostats per heating zone, possibly even per room, controlling local TRVs to regulate temperature and able to bring on the boiler ("call for heat" or "boiler interlock" are common terms) if any zone needs heat "