Features: 1.19 inch rack-mount 2.High frequency and dual conversion online technology 3.Advanced PFC technology 4.Ture sine wave output with less then 3%THD 5.Self-detection when UPS start-up 6.Advanced battery manegement 7.Cold start feature(DC power on) 8.Automaticlly charging batteries in UPS off mode 9.Lighting and surge protections(surge enegy rating 1050Joules) 10.Short circuit and overload protections 11.Fun speed automatically changes as load varies 12.Optional external battery pack 13.EMI/RFI noise filter 14.Shutdown and restart scxhedule producing area:GuangDong EAST Power CO.,LTD