1.High frequency and dual conversion online design 2.Wide input voltage range 3.Advanced PFC technology 4.Ture sine wave output with less then 3%THD 5.Self-diagnosis at UPS startup 6.Advanced battery management(ABM) 7.Cold start feature(DC POWER ON) 8.Automatically charging battery in UPS off mode 9.Lighting and surge protections(surge energy rating 1050 Joules) 10.Short circuit and overload protections 11.Fan speed automatically changes as load varies 12.Optional external battery pack 13.EMI/RFI noise filter 14.RS232 15.Shutdown and restart schedule producing area:GuangDong EAST Power CO.,LTD