When the unit arrived I was already clear that this is not possible, because it indeed ever has no HDMI socket. OK was my mistake, because in the pictures you can clearly see which ports the device has.
Well then just watch TV not HD, the main thing I was thinking. While connected device, the transfer takes place (from the living room into the bedroom about 7m. TV in the bedroom right next to the door, with the door open is theoretically pure 7m without walls or other) but in a poor video quality, full interference. The audio quality even insufficient since very very quiet and with strong noise covers (all channels and possible locations have been tried and the result was always the same).
On request whether this is normal, I was told, that can interfere with all electrical appliances and metals in the walls or otherwise transfer (and at 7m). In each apartment there are electronic devices these days that you can not prevent, so I guess that the transmitters are very very sensitive. On the question for why in the description is broadcast in 1080p, I was told that the 1080p are interpolated. So no real HD and from the interpolated transfer but I also could not find anything.
I think that the transmitter with a price of 20 would be okay, but because they cost 3 times and bring a whole but insufficient capacity, they are much too expensive.
Product will be returned.
