Automatic voltage switcher 1.one hundred percent protection 2.simple to use 3.microprocessor,5 LEDs 4.1 year warranty Automatic voltage switchermicroprocessor controlled, the most advanced spike/surge and voltage protector worldwide1.100%complete protection:automatically, disconnects the power when it is "bad" abd reconnects it when it is "good"2.simple to use :direct wiring into the mains adds ...