High Frequency Online Uninterruptible Power Supply System is used for providing battery back-up to large number of appliances. The Uninterruptible Power Supply System is available with both audible and indication alarm functions. Sona Power Systems supplies High Frequency Online Uninterruptible Power Supply System.Sona Power Systems offers a wide range of power back up appliances like inverters, UPS and solar panels for industrial, commercial and domestic applications. The High Frequency Online Uninterruptible Power Supply System provides wide input frequency range and is compatible with small generators.