First I must say that I was very skeptical of this product after reading various things online however, it meets my expectations. I have the unit hooked up to my Directv and hid it in the garage and the received hooked up to my tv in my living room. This is being transmitted through a floor. I have had no problems after setting it up. No interference by any devices at all. It is extremely easy to hook up however the wireless transmitter is a bit tricky. However, it isn't nearly as difficult as you might think - at least with Directv's receiver. I can literally point it at the receiver and it switches the channel without a problem. If I had any cons is that the only connection available is RCA and stereo sound is probably not possible - I don't know as of yet. However, if you are using it like I am, it is a great, great purchase and can really hide a lot of wires, etc. BTW, you can buy additional receivers and not need multiple boxes!!