new type,pure sine wave INVERTER/CHARGER HBC-PSW1000VA, HBC-PSW2000VA, HBC-PSW3000VA, HBC- ... systems, communication systems, hospitals, lighting tools, and storesParameters:Output voltage: 220V±10% or 110V automatic stabilized voltageCharging input ... auto switch in 3sOutput wave form: sine waveEfficiency: ≥0.7Battery method: HBC is the external connected batteryUndercover voltage protection ...