Yes, even double checked in the manual. The sensor is on the right side of the display window. I used different emitters and different ports on the rf extender. But still the rf extender will only work the sat box and dvd perfectly and nothing on the marantz receiver. The remote works it IR perfectly, but not RF at all. If there was rf interference in the room, it would effect the control of all three devices, right? Any suggestions that I haven't thought of would be great.