Chris,
Regarding one of your earlier posts on this thread... you mentioned that with your garage door idea with the universal module, you have to send an "ON" command followed by an "OFF" command to release the PUM01.
Is this an older model? The newer (is it newer??) Universal Modules have both a sustained contact mode as well as a momentary mode (contacts close for 2 seconds, then back open again). This way, you wouldn't have to send an "OFF" command to release the contacts.
[Link: x10.com]Just thought I'd let you know.
Roland