Uninterruptible Power Supply APC Back-UPS PRO BR-1200VA:The worst thing that can happen to you when you work on a computer is a power outage a few seconds before you saved that important document. Your work is irretrievably lost, and you have to start again from nothing. Such tragic scenarios can be warded off by the APC Back-UPS PRO BR-1200VA uninterrupted power supply (UPS). This hardware is practically a premium battery backup that provides power for all appliances needing electricity. The APC Back-UPS PRO BR-1200VA UPS battery backup features the Line interactive design approach. Off-line is classified as the most basic form in case of a black-out, since it switches power to the UPS unit itself. The line interactive UPS also adds data line surge suppression to prevent damage from electrical surges from the grid. APC Back-UPS PRO BR-1200VA Backup Power Supply Key Features Type of backup power supply: Line interactive Actual performance: 720 W UPC operation at full load for 4 min 8 sockets (C13), as used for monitors, printers, or amplifiers The most important parameter is the UPS run time during outages. This is governed by the power consumption of the connected electronics – for example, at half-load (50%), the backup time will be three times longer. The load of the UPS governs the operating time, which at full load is 4 min and at a load of 50%, its 14,2 min. It is therefore necessary to determine the energy consumption of the connected electronics and ideally to have some extra power left. The APC Back-UPS PRO BR-1200VA measures the apparent power as 1200, but in reality, the actual usage matches the value of 720 W.