if you share the same 电表, yes, otherwise it is ok, the signal will become unusable when through transformer, also avoid use power bar.
-youcanyouup(我不行);
2014-10-30(#9072194@0)
http://www.newegg.ca/Product/Product.aspx?Item=N82E16833156417
sorry, the link in the previous is only for single, this one should be a pair, and last time is $28 plus free shipping
-youcanyouup(我不行);
2014-10-30(#9072210@0)
why do not you just put ATA adaptor in basement and use phone line? that is easier way and every room phone plug you can use it.
-youcanyouup(我不行);
2014-10-30(#9072236@0)