commutateur de demande automatique

CONT: A demand switch inserted into selected house circuits will greatly reduce electric fields when you do not need to use electricity on a circuit (e.g. the downstairs lighting circuit at night). This is especially useful while you sleep when low levels of EMFs [electromagnetic field] are necessary for an optimal immune system. People with ES [electric sensitivity] will find demand switches helpful in regulating their electricity supply to reduce electric fields at all practicable times.