Old rubbish yes , change batteries often
Poor setup leads to wireless bells going off often resulting in bells needing batteries to often , although poorly trained users can do this to but less so
Nest has also a paid for option atleast it does in the u.s and will have e that here to from what I know
I think enforcer is best option for a fixed alarm system for diyers although the bell tamper gets everyone lol
But eventually you may need an installer for the cloud side , they give end user support though from what I have seen
Others here might be enforcer experts who know more