Sollatek HIVOLTGUARD: Power protection against Voltage fluctuations. Protects your valued appliances and devices against Over-voltage; Power-back surges; Dangerous electric surges and voltage spikes. This device is very effective and protects photocopiers, Fax machines, LCD/LED displays and monitors, Televisions, Video and Game consoles, Decoders, Mobile phone chargers, Laptop chargers, Desktop Computers and all electrical appliances and equipment that applies power and voltage ratings within its specification. At power ON it monitors the power from your AC outlet for 30-seconds before switching-ON. If voltage hits the 260Volts mark, it will sense danger and automatically disconnects the power, therefore saves your gadgets, appliances and equipment from costly damage.