Mains-Line failures, Blackouts, High & Low Voltage fluctuations, Lightning, Electrostatic discharge and rapid over voltages are phenomena found in all environments, causing damage to hardware and loss of data. When the mains supply is present. the inverter section derives its power from the mains, rectifies it and the back-up batteries are kept in a constantly charged state. When the mains supply fails, the source of DC Power for the inverter section shifts to the Battery without any break whatsoever in the output.Kevin Online UPS should be your source of choice for ’;Pure’; and ’;Sure’; power for all mission critical requirements. Salient Features: Wide input Voltage & Frequency Window, Extremely Low Total Harmonic Distortion