... ups power 2KVA. 2,led display 3,Optional extension battery pack 4, 7- 25mins backup time (standard ) Product ... UPSSite wiring fault warningOn-battery power-on functionSmart RS232 communication interfaceIntelligent slot availableSealed lead acid, maintenance free battery APPLICATIONServers, Data-Center, ... AC Mode: Follow AC Mode (AC Range56~64Hz); Battery Mode: 60Hz(1±0.2%)Output Wave FormSine WaveBack- ...