I bought three radio actuators and installed in a large room (kitchen / living room). These are connected together, what works well. If one of the one makes changes (eg night setback), all follow. So far so good. The problem, however, is that a EQ3 somewhere wired "offset" has been programmed so that the thermostat always says, to measure the temperature too high (km compared to the space center) and something drauflegt. This can not be corrected. You can program an "offset", which then leads to the proper temperature is maintained in the room, but still too high "measured" is. So, for example, about 21 ° C is maintained, but will always be displayed 23 ° C. Utter nonsense. According to the Internet, this can only be solved by the more than 30 expensive wall thermostat. Actually, I thought that as an intelligent control valve that hinbekommen myself and wanted to save these costs Also, the firmware update to 1.2 does not correct the temperature problem.