... controlling rack mount pure sinewave 3KVa inverter,19inch series are in accordance with international standard 48 ... Vdc digital controlling rack mount pure sinewave 3KVa inverter,Inverter ... P Frequency, battery, loadAlarmAlarmMains failure, battery low, overload, inverter faultMutemanualNoise< 45 dB (at 1 meter)EnvironmentTemperature0 - 40Humidity ...