Common surges and spikes can easily damage or destroy your valuable AV electronics. Exclusive Dual Mode Plus automatically disconnects to isolate your equipment from surges and spikes. It also sounds an alarm to let you know that the PowerCenter has protected your electronics from dangerous power conditions.-Surges and spikes can travel not only on your AC power line, but on cable TV, antenna, and phone lines as well. The AV 750 PowerCenter features surge protected coax connections for these lines. It also has protected phone connections for phone, DVR, and Modem lines.-Power surges can harm not only your valuable Home Theater equipment but can also start a fire in your home. Ordinary surge protectors use plastic-coated MOVs- metal oxide varistors - to absorb excess voltage. But powerful surges can melt the plastic coating, potentially causing a fire.-This Monster PowerCenter features ceramic-encased MOVs for superior fire protection. The ceramic enclosure is made of fireproof material similar to that used on the space shuttle to give you peace of mind that your home theater and, more importantly, your home is safe. -8 surge-protected AC outlets -Dual Mode Plus power protection automatically disconnects from dangerous power conditions and sounds and an alarm -Ceramic-encased MOVs reduce risk of fire caused by power surges -Protected phone and coax connections -1440 Joules of protection