Tom,
My question to you is what is the "X-10 transmitter module" for? All that is needed to control the 4 lamp modules with the Pronto would be an IR543 or 4040 (same part different number).

The answers I give are, in my mind, appropriate to the questions that are asked! If someone wants to take it to the "next" level, I try to give my input on the subject. Sometimes that goal is accomplished with unconventional things like magnetic switches, motion sensors and so on. If the question is a simple one, as this on is, I answer it with the simplest and CORRECT answers. I usually will try to enlighten new users on the advanced possibilities of X-10 so they can judge for themselves how far they want to take their X-10 hobby.

Liquid,
Here is a link to “The Basics of X-10”. I wrote this for newbies like yourself. Good luck!
[Link: remotecentral.com]

Chris Couture