Offers reliable surge and line noise protection. The compact direct plug-in design allows for easy portability with fold down plug and carrying pouch and features three outlets, one in front and one on each side of unit and 540 joules of surge energy absorption. The diagnostic LED alerts you to potential wiring or protection faults before connected equipment is damaged. 2.1 amp USB charging ports offer fast charging for smartphones, tablets, MP3 players and other portable devices. Number of Outlets: 3 2 USB Joules Of Surge Protection: 540 J Lines: 2 Jacks: USB.