Since there are already a lot of positive reviews about this weather station, I will confine myself here once on a key feature of TFA 35.5015.IT Eos. The transmitter is installed on the terrace, the station is 3 floors up in the attic. The radio signal must go through an outer wall and by two reinforced concrete floors (20 meters distance), which works flawlessly thanks to the built-in 668 MHz radio technology. A TCM Weather Station with 443 MHz radio technology, which I had placed in the same locations, failed here simply to serve.