Thermo-Hygro-Wind Sensor. Sensor for use with TFA weather station 35. 1140. For the wireless transmission of outdoor climate data. Measures wind speed. Combination sensor. Maximum range: 80 m. Installation: Stand-alone. TFA Dostmann. With over 1000 weather and measuring instruments, the German company TFA Dostmann is one of the leading companies in the industry in Europe. The TFA range is characterized by its own innovative technologies and exclusive designs. It is continuously developed in collaboration with meteorologists, IT specialists, and designers.