there's a smart-home thermostat kit on offer today for £56
direct from the (spanish) manuf.
momit.com using the code BLACKF
this isnt an advert but a suggestion that those who wish to experiment with 802.15.4 6LowPAN by turning their heating on/off/smart - including proximity over iOS or Android or BerryOS - can experiment for a decent price!
what could possibly go wrong!
(I did buy a smart thermo + 6LowPAN ethernet gateway because amzn wanted £49 for a lot of the 'clockwork' thermostats) I've no idea if this model actually works