Reply from Smarthome
Thank you for contacting Smarthome.
There are two ways of accomplishing that sort of conversion, but both require one of the higher end Central Control options for Insteon. Namely Houselinc 2 and ISY-99i
Houselinc 2 is a software program that works through a 2413UH Insteon unit, this can create an event to be triggered by a specific Insteon unit, and cause a specific X10 signal to be generated when that Insteon unit is toggled. This requires a PC for its operation.
ISY-99i is a similar process, however the ISY-99i is a stand-alone web server device that does not require a computer for its function.
Currently there is no unit simpler (cheaper) than those that can accomplish the task you have asked.
Please do not hesitate to contact us again if we can be of further assistance.
Sincerely,
Steven
Customer Solutions Center
www.Smarthome.com