Just a simple two part wall mount for a Netatmo module.
Basically you need to print the holder and the mount and afterwards glue those things together.
Apply some strong and water-resistant double-sided tape on the back of the mount and place it on your wall.
Note that this highly depends on the kind of the wall you want to glue this to :) Chose the double-sided tape according to your needs.
Printed mine from PETG to be outside compatible.
The author hasn't provided the model origin yet.