... frequency50/60HzInputVoltage Range176VAC-280VAC(±3VAC)Frequency Range50/60HzOutputVoltage Regulation220/230/240VAC±2%Frequency Regulation50/60Hz+0.1HzWave FormModified ... 4ms Typical 6msCurrentCharge Current10A10A10A6ADC Voltage12V12V24V24VOvercharge Protection15V15V30V30VDisplayLCDUPS Status, Input/output Voltage and Frequency, Load, AC,battery ,fault, etcOperating EnvironmentTemperature0°C~ ...