Agreed your the texecom expert on radio I've only supported issues on it. From what you say it's always an installation issue. I can add my bit from support. It will be brief New visonic is less troublesome than the previous, risco is popular but similar, pyronix is more on numbers but at least its 2 way ish, scanny (Eaton) is 1 way and is low on issues. Daitem is low too. There will be a day when stats like this are published.