APC by Schneider Electric Smart-UPS RT Double Conversion Online UPS - 20 kVA/20 kW - Single Phase/Three Phase - 7U Rack/Tower - 4 Hour Recharge - 3.02 Minute Stand-by - 230 V AC, 380 V AC, 415 V AC Input - 230 V AC, 380 V AC, 400 V AC, 415 V AC Output - Pure Sine Wave - Serial Port