UPS Online Ultra Power 6000VA RM, 5400W, RS-232, USB, SNMP Slot, metal case, LCD display6KVA / 5400WInput: Voltage : 220V: 120~275VacFrequency : 220V:46~60Hz, Adjustable by softwareOutput:Voltage: 220V: 220±1%VacFrequency: 220V: 50±0.2%HzWave form: Sine WaveQTY & capacity of battery: 16pcs*12V7AhExternal battery norminal DC voltage: 192VDCTransfer time: 0 msOverload capability:105% ~125% lasts for 1min then transfer to bypass output;125%~150% lasts for 30 seconds then transfer to bypass output,and the output will be shut down in 1min; over150% lasts for 0.5second then transfer to the bypass output.Auto re-starts when AC recovers YesSilence setup YesAutomatic charging (offline charging) YesBattery low voltage protection YesOverload & Short circuit protection YesEnvironment of performance:Temperature 0 ?C~40 ?C, Humidity 20% ~ 90%Gross weight: 72,5 kg including battery pack