... range overload, short circuit protection Modified Sine Wave 800VA Offline UPS of computer center using, AVR function, high performance transformer and ... quality MOSFETPCB BOARDFor computer use.UPS PACKING, inside with polyfoam protector, carton can be custom made.:Offline UPS assemble line picture: ... *195*275Loading Quantity (1*20' container21002100210011001100 800VA offline UPS of computer backup