The new 100-277 Volt, 50/60 cycle Insteon modules. Must determine the power frequency and then set its timing accordingly.

 

The updated Insteon Details White Paper gives some information on Insteon signals.

http://www.insteon.com/pdf/insteondetails.pdf

The updated Insteon Details White Paper gives some information on Insteon signals.

http://www.insteon.com/pdf/insteondetails.pdf

It would appear, by definition, RF communications are synchronised, slowed down, and dependant on powerline zero-crossings as evidenced by this from the document:

"Messages that need to be retransmitted will have a Hops Left count greater than zero. If the INSTEON device receives such a message from the powerline, it will first retransmit the message using RF as soon as it has received the last packet of the powerline message, then it will retransmit the message on the powerline in the next timeslot. If the device receives the message via RF, it will first retransmit the message on the powerline in the next timeslot, then it will retransmit the message using RF immediately after sending the last packet of the powerline message. In this way, RF message received asynchronously will be resynchronized to the powerline zero crossing at the earliest opportunity"