The AUR9111 Series UPS is a new generation high frequency Online UPS which adopts advanced DSP digital control technology to effectively improve product performance, system reliability and achieve higher power density. It is characterized by its small size, light weight and high work efficiency. It can effectively solve power problems such as power outage, grid high voltage, grid low voltage, instantaneous voltage drop, amplitude reduction, high voltage pulse, surge voltage, harmonic distortions, clutter interferences; frequency fluctuations etc. and provide high quality, clean power for the critical load to be protected. It can be easily installed with a standard 19-inch rack construction.