Hmmm, I think I found the answer to my question.
I found the following diagram that lines up each
tone to a specific trace (#).
WARNING: 2 things I'm not sure about:
1. one person said if you cut the trace for the
standard tone, then you will disable the arm/disarm
chirps. Another person said if it's a DEI siren, that you
can cut any of the traces without deleting the
arm/disarm chirps. So I don't know.
2. Also heard for the DEI brand sirens, that the trace
numbers are reverse (so standard is #6). Again, I'm not
sure which is correct.