High surge protection. Extend the lifespan of your appliances by protecting them with the Magneto® 4-Way High Surge Protector Multi-Plug. This High Surge Protection Multi-Plug automatically protects your electronics & appliances from sudden electricity surges that can cause irreversible damage. How does it work? This Magneto® Surge Protector safeguards your connected devices & appliances from harmful power surges. When the Surge Protection indicator LED no longer illuminates, it indicates that the Multi-plug has successfully shielded your devices & appliances. Added safety. With built-in auto safety shutter outlets that prevent children from inserting their fingers or objects into plug sockets.