The TRIPP Lite LC2400 (Line Conditioner / AVR System Automatic voltage regulator / Power conditioner AC surge suppressor) is a 2400 watt Automatic Voltage Regulation (AVR) system. Protects sensitive electronics, computer accessories and home theater equipment from power-related damage and performance problems. Extends the useful life of connected equipment by providing optimum voltage conditions for enhanced efficiency and cooler internal operating temperatures. Reliable transformer-based voltage correction circuits maintain 120V nominal output during voltage fluctuations between 89 and 147V. Three levels of voltage stabilization offer targeted response for over voltages, under voltages and severe brownouts.