1.Advanced Battery Management 2.Automatic charging in UPS off mode 3.Smart RS-232 communication port 4.Optional ... Time0ms Panel Indication LCDInput,oupt,battery voltage,frequency,load rate,UPS state, temperature LEDMain input , bypass,Inverter,Battery,Over load, ... (1m) Communication InterfaceRS232 Software1.Power status 2.UPS shutdown 3.Monitor UPS status 4.UPS self test 5.Auto-save files Product size ...