The ultimate solution was to buy a color changing shower head from LIDL. This made it so easy to always be in the right temperature zone when taking a shower.
The shower head has lighting that turns to green when the temperature is between 34-38C°. It's red when the temperature is above 38°, and turns to blue when it's below 34°C.
It also shows the current temperature as a display which you can see while you are under the shower. The sensor setup also seems to be powered by the stream that flows through the shower head and only turns on when water is running.
The ultimate solution was to buy a color changing shower head from LIDL. This made it so easy to always be in the right temperature zone when taking a shower.
The shower head has lighting that turns to green when the temperature is between 34-38C°. It's red when the temperature is above 38°, and turns to blue when it's below 34°C.
It also shows the current temperature as a display which you can see while you are under the shower. The sensor setup also seems to be powered by the stream that flows through the shower head and only turns on when water is running.
I hope this helps.