Hi, I would like to keep my bedroom "fieldfree".
Has anybody a design idea for a Mains disconnecting Switch?
I'm afraid merely disconnecting the mains supply from the wiring in your room will not keep you from the influence of electromagnetic radiation.
Nor will covering your walls or body with aluminium / "tin-foil", so remove the helmet and take two asprin (provided your not allergic to it).
When you are feeling better come back and tell me about your concerns.