I got a new thermometer that supports an outdoor module. Despite the fact that I don't have such a module it displays an outside temperature of currently 2.6°C, which is more or less accurate for the current weather here.
I was both happy and surprised that I get an outside temperature out-of-the box without the actual module.
So now I would like to use the outside temperature in one of my Arduino projects and I wonder what it takes to somehow read this radio-signal.
Update: My station looks more or less like so:
Where I found the image they mentioned that it was 433 MHz controlled