10-outlet, 120-volt battery backup system provides incredibly reliable protection from power surges. 450-watt back-UPS features a surge energy rating of 354 joules. LED status indicators let you quickly understand the unit and power status with visual indicators. Disconnected battery notification warns you when a battery is not available to provide backup power. Cold-start capability provides temporary battery power when the utility power is out. Transformer-block spaced outlets protect your equipment with input transformer blocks without blocking access to other receptacles. Dataline surge protection protects connected equipment from power surges on the data lines. Hot-swappable batteries ensure clean, uninterrupted power to your protected equipment while the batteries are being replaced.