Mark - I just sent you some links for some UPB info I had.

I never did a ProntoScript interface to UPB because I was (previously) controlling all of my UPB through a TCP interface that I wrote to my HomeVision system. I'm now doing all my Pronto control of UPB through my HAI OmniPro II system. Both of those systems use their own protocols for handling the UPB commands, so anything I did there was not applicable.

I don't do a lot of JavaScript, but I'll see if I can wrangle some time to put together a sample UPB app. The key components are to make sure you set the PIM for message mode and not pulse mode and that you are using the proper preamble, checksum and length calculations on what you send.