eBerry 90V-250V 18 KW Power Electricity Spikes Buster Energy Saver Saving Box US Plug Stabilizes the voltage supply and balances the current source Improves efficiency and reduces heat dissipation to save electricity and prolong life of devices Environment-friendly. Simple to connect with standard US plug, easy to use, maintenance free Simple and sleek design with LED lights to indicate operation Efficiently conserve energy and save your money!