Fitting a few "Electropulse Filters" in your house helps reduce the Dirty Electricity, by lowering high-frequency noise on your house wiring. They plug in (and occupy) a standard 13A mains power socket. We suggest a maximum of one-per-room and, in the first instance, probably just starting with two for the whole house. Please note that they don't lower the power frequency electric fields created by house wiring, only the high-frequency noise between the 230 volts phase and the neutral.
Technical detail: The unit contains a 10 microfarad a.c. mains-voltage rated capacitor and discharging resistors. The units are fully approved to European safety standards.
Please note that these are fitted with a UK style plug, and will require a socket adapter to be used in many other countries. You do not require an earth pin on your system for the filter to work correctly.