I am scheduled for morning installation of my DTV service including MRV. The on-line help says to make sure their is an open electrical outlet at each tv for the MRV. Does this require an entirely open outlet? All of my tv's are connected to surge protectors. With all of the peripherals, etc., I doubt I can free up any outlets. Can the MRV module plug into a power strip? Does it need both plugs on the receptacle?