In conjunction with external sensor perfectly

Due to the compact design, the unit is equipped with its internal sensor is not quite as well-suited to bring a room to the desired temperature, we with an external sensor: because the sensor is located directly on the heating unit, the thermostat controls from already before the space has actually reached the desired temperature. While saving more heating costs, but measuring the room temperature elsewhere NAC, then it may well be that this is below the set temperature, even though the thermostat near the heating already reported to have achieved this.

But one linked to the actuator with a Temepratursensor the same manufacturer and places it in a better position in the room, then adjusts the Tthermostat on the temperature of the external sensor, thus achieving more reliable the desired room temperature.

This works quite excellent already in stand-alone operation, its really strong playing the system but only if one is coupled with a central unit (either still HomeMatic, better but still with a home automation server (for example "FHEM"). In my environment I read with FHEM the data supplied by the thermostat, into a database and make it graphical overviews of the temperature curve and the valve position.

Compared MTI another manufacturer noticed here that this thermostat very wide turning up at the start of the "comfort temperature period" (in my case, to 92%) in order to bring the room quickly to temperature. Approaches the measured temperature to the set temperature, then turn down the thermostat starts - currently around me to only around 10%. The room temperature, it keeps you constantly throughout the day.