Can anyone confirm that a 240v central heating wall thermostat can be replaced by the Nest E Heat Link? According to Google, the wiring needs to be low voltage so it will not work but I have seen a few comments in forums that the European version is different to the US version and does work at 240v. Just need to know as my current thermostat, Honeywell DT90E, is 240v. Cheers. H.