The aMagic MagStrip Surge Protector offers extra outlets_ power extension from wall outlets and protects valuable electronics from damaging power surges. This power surge protector safeguards your personal computer_ laptop_ printer_ cameras_ camcorders_ tablets_ smart phones and other hard-to-replace equipment against damage_ data loss_ file corruption_ and system crashes. SURGE PROTECTION - A power surge_ or transient voltage_ is an increase in voltage significantly above the designated level in a flow of electricity. In normal household and office wiring in the United Kingdom_ the standard voltage is 230 volts. If the voltage rises above 230 volts_ there is a problem_ and a surge protector helps to prevent that problem from destroying your device.