Eaton 20 kVA UPS Dual Feed with Internal Batteries Battery Run Time: 0.35 Hour Series: 93E Input Voltage Range: 208/220V Input Frequency: 50/60Hz Input Connection: Dual Output Voltage: 208 V AC 220 V AC Interface Port: 1 x REPO 1 x RS-232 Serial Management Software: Eaton Intelligent Power Software Suite CD (included)