... phase energy saver with CE,ISO9001,ISO14001,ISO28001Work StatusSuitable for families, commercial area,office or the place with single phase electric socketVoltage90V-250V ... wiring and appliances6. Harmonizes electrical current, reduces7. Have gained CE&ISO certification8. At least 10years use life9. Easy to use ... for choose11. Welcome for OEM&ODM cooperation12.have gained CE,ISO9001,ISO14001,ISO28001