If your INSTEON or X10 system consists of a desktop timer and a couple of modules, chances are you won"t encounter signal-strength problems. But if you"re using several INSTEON or X10 switches, modules, and controllers throughout the house and want to assure maximum reliability, you"ll need to supplement your system with the FilterLinc 10-Amp Plug-In Noise Filter. The dual-function 10-amp plug-in noise filter not only block unwanted interference on the power line, it also prevents other devices from attenuating your signals—resulting in a virtually problem-free INSTEON or X10 system.