... low, overload, short circuit protection Auto restart, RS-232 to RJ11 LCD offline UPS 1000VA RS232 to RJ11, AVR function.Products Pictures:OfflineLCD displayRated ... alarming), no outputprotectionBattery modeKeep alarming when load ranges from 110% to 130%. (Fault indicator is on, and buzzer keep alarming), then ... °COperating Humidity10%~90% (no condensing) LCD offline UPS 1000VA RS232 to RJ11