You know the saying "a picture is worth a thousand words"? Well, here it's "a link is worth a thousand (or more) words".
What, exactly, do you mean by "monitor and control it"? Monitor is pretty clear, but control is not. You want to emulate a break in and see what happens? That's one form of control. Probably not the one you had in mind.
To start, basically a web ui that would duplicate the possible physical actions and lights. Enter a key code, enable/disable the alarm, trigger an emergency call, etc. If that all works great, maybe I'll do some cooler things.
If I grabbed a picture of the circuit would that help? There weren't any obvious model numbers or anything I could see. There are some +/- terminals for the relay circuits and then some additional terminals for the panels. The more I think about it, there are only a few terminals for the panels, so it most likely would be some type of encoded signal.
I did a pretty fair amount of googling and didn't find anything like this.
Two things would help - the information on how to reverse engineer an encoded signal, and also some places where people might already be doing these things. The technician manual would be awesome, because I basically would like to jailbreak it, but I'm fine with keeping the contract and just extending what it can do.