Tripp Lite ISOBAR4ULTRA Isobar Surge Suppressor, 4 Outlets, 6 ft Cord, 3330 JoulesProtect computer, networking and telecom equipment from surges, spikes and line noise with this premium suppressor. Isolated filter banks eliminate interference between your connected equipment. Widely spaced outlets accommodate large transformer plugs without blocking remaining outlets. Diagnostic LED indicators vividly alert you to potential power problems. Number of Outlets: 4; Joules Of Surge Protection: 3330 J; Protection Type: Power; Noise Protection: 40 to 80 dB EMI/RFI Noise Filtration.