Dear Mr. Meyer,
this is barely not correct. This article is just an wireless thermo-Hygrometer (including 3 transmitters).
In case, you connect the station with our WeatherHub System (Starter sets with Gateway and transmitter optional available) it is possible to check temperature and humidity values via Smartphone.
The WeatherHub set with the above mentioned Station and gateway is also available under article no. 10469690. In case you use this you are able to check the values via Smartphone app.
Kind regards
Your TFA Support