I've been thinking a long time about a solution for my personal needs, and am now stuck in this range! Got the initial version of the cube, two thermostats and two additional thermostats ordered relatively simple installed and approved! I immediately ordered four thermostats to populate the main radiator in the house! I travel a lot and never know exactly when I'm at home ... The first two days of testing seem to realize what I need .... A warm Bude, because when I arrive home !!!! As I said ... After a brief test - best ... I want to be happy here again write for continuous operation! To negative reviews I have to again complain about time that a lot of people simply "drauflos press" and it does not work immediately and rummotzen equal ..... I would like to say: read sensibly and calmly Instructions ... Maybe go out times from the installer, wait (stay calm) restart ... Helps in many applications ... !!!