... other surveillance equipments. include:mains status,UPS working status,system setup,menu operation, remoted control and self-diagnostic, ... ,voltage change,battery,fault,loadLCD Input/output voltage/frequency,load battery voltage, inner temperature, and Inverter statusAlarm:Mains ... overload, UPS faultMute:ManualCrest ratio:3:1Protection function Over load:>120% for 2min bypass or shutdown;>150% for 10 ...