... of DC12V, AC220V power supply system transformation Applicable ambient: Car,Room,OfficePerformance specification:1, LCD liquid crystal display the temperature, ... power supply system transformation3,Activated carbon, negative ions, photocatalytic, ULPA filter, electric ion five heavy purification;Technical parameters:1, Power requirements ... 580*405*400mm?10, N.W.: 18KG, G.W.: 20KG room air purifier