The corcern is the installer is liable if your system fails to perform.
I understand their position and they are correct.
Don't know orisec and not sure it can be locked. I would.
However if your out of support with your maintainer they should default the panel (at a cost if visit required).
No your not locked into them assuming you own the hardware. But the programming may be theirs.
A default protects everyone so that's the way to go