Protect computers and other sensitive electronics with reliable backup power. Power conditioning protects connected loads from surges, spikes, lightning, and other disturbances. Automatic battery self-test ensures early detection of a battery that needs to be replaced. Hot-swappable batteries deliver clean, uninterrupted power to protected equipment while batteries are being replaced. Audible alarms provide notification of changing utility power and UPS conditions. Combination of battery-protected and surge-only outlets reserves power capacity for connected equipment that requires battery back-up.