This might not be the place for this but I feel like someone here should know.
I moved into a new house recently and there's a whole security system, infrared scanners, alarms on all the doors and windows, glass break detectors everywhere. When we open a door or window there's a little chirp so something is working, but I'm curious if anyone knows if I can rewire this somehow or get a new panel so that I can actually set an alarm and stuff.
Most of those units, at least in the US, have been converted to cellular data now.
To anwer ops question, without the manual in the panel box, you may have to see if there is a newer but compatible keypad but you would not likely be able to use the old equipment on the modern panels easily.
Edit: also +1 on Ademco panel