My home is a concrete block structure approximately 1868 feet tall. The internet router is in the common room furthest from the master bedroom where I had very little internet signal to watch TV or use my computer. I tried another expander but the results were marginal and inconsistent. I bought a TP Deco system and it improved signal strength by almost 80%. This is not ideal with this type of concrete structure, a third decorative protection module will probably improve the signal strength. So in applications like mine I would recommend three modules.
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