SmartPro Line-Interactive Sine Wave UPS, Extended Run, 9 Outlets, 3,000 VA, 570 JThis line interactive UPS system protects your critical network systems from damage, downtime and data loss. This UPS system generates pure sine wave power for superior compatibility with active PFC power supplies and other sensitive equipment. It also has a feature called automatic voltage regulation (AVR) that detects when input voltage is out of bounds and corrects it without using the battery. All Tripp Lite UPS systems also include built in surge