Technical SpecificationsCapacity 1000VAInput Voltage: 220VAC AC Mains Input Voltage Range: 145-280 VAC (same as AC mains) Frequency:50 HzOutputVoltage Range (Battery Mode): ±10%Frequency Range (BatteryMode): 50 Hz ±1 HzTransfer Time: <6ms Waveform (Battery): Modified sine waveBattery Battery Type & Quantity: 12V/ 7Ah x 2 BatteryCharging Time: 6 hours charge to 90%LED Indicators AC Mode: Green lightBattery Mode: Red light flashAudible AlarmBattery Mode: Alarm beeps every six secondsLow Battery: Alarm beeps every secondOverload: Alarm beeps twice every secondFault: Alarm beeps continuouslyProtection FunctionComprehensive Protection: Overload, deep discharge and over-charge protectionEnvironmentTemperature And Humidity: Relative humidity 0-90% and temperature 0- 40°C (No-condensing)Noise: less than 40dB at one meter distancePhysical Function Dimensions D X W X H (mm): 460x408x313Net Weight (kgs): 10.5