Having found that the thermostats very well maintain the set temperature and also through all the daily programs smoothly, we have decided to equip the remaining spaces with the heating controllers. In some areas, however, I had to readjust to the thermostat by means of an external thermometer remeasuring the Tempetatur an offset value. This has the advantage that I can continue to adjust and read the correct temperature setting on the thermostat head, the controller internally but added a certain offset value or subtracting. Also this has for all rooms worked perfectly.
In a forum of ELV I have also read in advance that there could be problems with weather-compensated heating systems, so that the set temperatures differ greatly. I could not find such behavior so far in my room temperatures.
The app for control of thermostats is not quite as sophisticated and visually appealing. Unfortunately, some features are lost due to an APP-update so that now a total temperature for all rooms can not be set simultaneously. So you could relatively quickly provide all thermostats to OFF when you leave the house or a longer period, the house empty. Now this has to be done individually for each thermostat or carried out via the additional purchasable ECO button.
Battery consumption is also decent, yet I still had no battery replacement at the thermostat make.
The "+" - version of the thermostats can save you need by the way, if you only used the Cube. If you also use the wall thermostats for certain areas, so I'd rather the "+" - advise radiator thermostats, since it may well be a small incompatibility between the "old" radiator thermostats and the wall thermostat.
Overall I give 4 stars, composed of:
5 stars for the thermostats themselves,
3 stars for the relatively poor software
