Received this X10 kit yesterday. It worked great in the same room and kitchen (there were no walls in between). When I took it up the stairs in the back room I got sound and picture but neither were good. He tried all four channels, but none helped. The room I put the receiver in is on the next floor where the transmitter is. I can't say exactly what the straight line distance between the receiver and transmitter is, but I think it's around 35 to 45 feet. I am really disappointed in the product. I was suspicious of this product as it didn't have clear specs or clearances. A NOTICE. I haven't tested the IR extender function of the remote control as I can't use this device all together. UPDATE December 8, 2014: I took off another star! IR signals to my Denon AVR-X4000 only. It worked great with the remote that came with this A/V receiver. On the other hand, when I tried to use it with the Harmony (650) remote to control the same receiver, it didn't work. Although the Harmony remote controls the AVR-X4000 directly, the IR signal does not pass through this device. I don't know who to blame the Harmony or this unit, but when I bought the Sewell BlastIR (SW-29311) it worked great in every way.
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