So I got the explora 2A decoder. Decided to put the explora 1 decoder in my bedroom as a secondary decoder. We stay in a complex so I have the 5.2 switch connected. There are two cables from the wall to the switch then I have connected the primary decoder (explora 2A) to port A then connected secondary decoder to port B. But on the secondary decoder it says that No communication from Primary Decoder E143-4. I am not sure what I am missing.
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