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.