Adjustable voltage-transfer points Maximizes useful battery life by widening the input voltage window or tightening the output voltage regulation. Audible alarms Provides notification of changing utility power and UPS power conditions Automatic self-test Periodic battery self-test ensures early detection of a battery that needs to be replaced. Building Wiring Fault Indicator This LED informs users of potentially dangerous wiring problems in the wall circuit. Cold-start capable Provides temporary battery power when the utility power is out. Dataline surge protection Provides protection of connected equipment from power surges on the data lines. Disconnected battery notification Warns when a battery is not available to provide backup power. Hot-swappable batteries Ensures clean, uninterrupted power to protected equipment while batteries are being replaced Safety-agency approved Ensures the product has been tested and approved to work safely with the connected service provider equipment and within the specified environment. Simple battery replacement Increases UPS availability by allowing quick, easy battery replacement. Transformer-block spaced outlets Protect equipment with input transformer blocks without blocking access to other receptacles. USB connection Use your PC to access additional power protection and management features for your UPS via a USB Port. User-replaceable batteries Increases availability by allowing a trained user to perform upgrades and replacements of the batteries reducing Mean Time to Repair (MTTR)