This setup is BRAND NEW. I have been using the same type of device since 2013 to control my Comcast Xfinity box on first floor, from my second floor bedroom (1080P HDMI). I live in a 1950s wood house and am not in anyway trying to push its 100ft range. That said, for my situation, it works flawlessly. On December 31, 2018, the transmitter on the first floor had no lights. It turned out that the switching power supply gave out. Unfortunately, I did not come to that conclusion until AFTER purchasing a replacement setup. This is a brand new GWHDMS52 purchased from Amazon on Jan 7, 2019 for $239.99 + tax.
I was hoping to recoup $175 + $10 shipping. I can include the receipt and you can register it as a gift for warranty purposes. I will try to accommodate requests for additional info.
thanks for looking
jim