Including push-button to thermometer

Hi,

Okay thanks for the help guys!

TomGeorge:
I see, all you need to do is when you press the button, you change which input variable you read to your output.

wvmarle:
I would read "active" as "the one that's in use" - regardless of whether it's powered on. Just read from the selected sensor and ignore the other.

Any suggestions how to approach these?