The Digital Energy LP-11U Series is a robust, high performance UPS system that provides power protection for a wide range of mission critical applications. Every LP-11U Series unit operates in a double conversion mode with true on-line VFI (voltage and frequency independent) operation, yielding maximum levels of power protection even under the toughest conditions. In addition, the LP-11U Series UPS is easy to install and service, especially in an office environment. The robust design makes it suitable for industrial applications as well.