Surge protector is designed to protect electronic equipment against surges spikes and line noise. Design accommodates bulky transformers without blocking remaining outlets. LEDs warn of potential power problems. Surge protector features 10 outlets telephone/DSL protection EMI/RFI line noise filtering failsafe shutdown mode an 8 cord with space-saving right-angle plug and keyhole supports for wall mounting. Surge suppression rating is 2395 joules. Tripp Lite Surge Protector 120V 10 Outlet RJ11 8 Cord 2395 Joule