... ,ISO28001 Itemhot sell single phase energy saver with CE,ISO9001,ISO14001,ISO28001Work StatusSuitable for families, commercial ... area,office or the place with single phase electric socketVoltage90V-250V ACFrequency50/60HzLoad30KWSuitable temperature ... and appliances6. Harmonizes electrical current, reduces7. Have gained CE&ISO certification8. At least 10years use life9. Easy ...