... /low or overload, the overload warning shutdown output, when battery voltage recovers normal, battery voltage ... can be used for DC input fault checking and AC output problem warning. Model500VA1000VA2000VA3000VA4000VA5000VA6000VADC INPUTInput Voltage ... %Sea Level(m)≤2000DISPLAYLCD Input/output voltage, frequency, output current, temperatuerLEDline,inverter,battery,output LoadMECHANICAL19 Inch Rack Type ...