The APC Smart-UPS is a line-interactive uninterruptible power supply that provides battery backup, voltage regulation, and power conditioning for connected equipment. When mains power fails, the Smart-UPS switches to battery instantly, giving servers, networking equipment, and workstations enough time to shut down safely or ride out a short outage. It also corrects voltage sags and surges using its Automatic Voltage Regulation circuit without drawing on the battery. Higher-end models in the SRT range use online double-conversion, isolating connected equipment completely from the mains supply. The Smart-UPS includes an LCD display for real-time monitoring, a network management card slot for remote access, and supports PowerChute software for automated graceful shutdowns. It is widely used in server rooms, IT racks, and networking environments across Australia and globally.