In this UPS class PROTECT B.R. is outstanding for its availability. The intelligent monitoring system with high-speed processor reduces the necessary components. A very large mains voltage range - without battery operation! - combined with automatic battery test functions increases the usable life. Further advantages are the line-interactive PROTECTion technology with sinusoidal output voltage as well as a hot-swappable battery system in plug-in design allowing a high-convenience installation and replacement.