Automatic mains isolating switch

It is an undeniable fact that electric and magnetic fields affect living organisms. How strong a field the human body can withstand without iII effects is a matter of argument between scientists and environmentalists. We leave it for the reader to decide whether he deerns it of benefit to fit the mains switch described here in a number of (to hirn) critical locations in his horne or to dismiss the whole idea as scare-mongering.