https://www.es-forum.com/Smart-meter-question-need-answer-tp3429082p3430136.html
Found it. TWAC is a smart meter:
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> They do not use the power lines - they transmit strong radio frequencies for 20 ft to 2 miles - all around the meter. The smart meters pass the data to other smart meters which pass the data to a special smart meter on each block which in turn transmits the data to the hydro company. As least that is my understanding from the studies I have been reading....
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> blessings
> Shan
>
> --- In
[hidden email], "Marc Martin" <marc@> wrote:
> >
> > > According to this guy, he said it doesn't use RF, so would go over power lines,
> > > but I don't think that matters, if is using those frequencies
> >
> > It's probably not using those frequencies, if it's going over the power lines.
> >
> > So far people here have been reporting problems with wireless meters,
> > not the ones that communicate over the power lines.
> >
> > Marc
> >
>