... low, overload, short circuit protection Auto restart, RS-232 to RJ11 LCD offline UPS 1000VA RS232 to RJ11, AVR function.Products Pictures ... and short circuit protection function.Auto charge in mains mode when UPS is shut off.Auto turn on function on mains mode ... alarming), no outputprotectionBattery modeKeep alarming when load ranges from 110% to 130%. (Fault indicator is on, and buzzer keep alarming), ...