[no subject]

     http://www.smarthome.com/2442.html

It appears they have their own protocol which they repeat both as RF and as
a PLC signal. Since they explicitly state that the Insteon modules do not
repeat X-10 signals, it's obvious that their PLC and X-10 PLC differ. My
guess is their PLC code is an image of the RF code.

Apparently it is incompatible with earlier versions of some of their X-10
products and it requires the same type of filtering as X-10.

More hype than hope?