1.   Messages for the intelligent plug are carried by signals on the house wiring.

2.   Because digital signals carry bits of information that are far more compressed than those of analog signals, they can transmit much more data.

3.   A digital signal can carry much more information than analog.

4.   That signal carries a unique code.

5.   Those RF signals carry television channels and are decoded to turn them into video and audio signals.

6.   On a clear evening, an AM radio signal carries the music of Jamboree USA as far as Australia and Japan.