Our system uses an external keypad. I do have a couple of other questions though.
Whilst the panel was in the engineer programme, I had the lid off, which was fine, but when I unscrewed the bar, an alarm condition was triggered, which had to be reset.
I connected what appeared to be a loose/spare core into a central junction block, which I think is the global tamper. I then removed it again, and the strobe light now doesn't seem to work. If you are curious why I conducted this action, it was due to the faults referenced earlier in the post, thinking that the loose core might be the problem.