Yubi Power Surge Slim – Power Surge Protector uses the most advanced MOV technology available today. Offering an ultimate in fireproof safety surge protection with the capability of high energy dissipation and fire containment. It uses thermal fuses to power off your system to protect against fire and other damages in the event of extreme or over extended voltage use. And it has a green LED light to indicate that the surge protection is functioning. Plus it has a built in EM/RFI Filter for maximum reduction of AC line noise filtration and is UL approved.