Monster CoolDown Technology powers down you projector, DLP, rear projection and projection TVs while keeping the fan on. Power blackouts can potentially damage expensive projection bulbs, make you miss your favorites shows and lose all your settings. Monster Power Home Theatre Uninterruptible Power Supply HTUPS 500 has two battery-powered AC outlets to keep your home theater running when the power isnt. And it features exclusive Monster CoolDown Technology, which automatically turns on your TVs fan to cool your projector bulb in case of a blackout. For a home theater power supply that keeps running the electronics you need to keep running during an outage, use Monster HTUPS 500.