I'm definitely not fixed on having a plug top as they seem like quite a large product flaw but I was interested if there were any requirements to secure it.
Tazz, you seem to know a lot about alarms. I was also interested in how they affect insurance as you mention. I found this:
Grade 1: Intruders expected to have little knowledge and limited tools. Alarm is suitable for a low risk
Grade 2: Intruders expected to have limited knowledge and some tools. Alarm is suitable for a low to medium risk
Grade 3: Intruders expected to have knowledge and full range of tools. Alarm is suitable for medium to high risk.
Grade 4: Intruders expected to have sophisticated knowledge and tools. Alarm is suitable for a high risk.
But do you have any more specifics or is it down to each individual insurance company how they grade alarms?
Surely fitting a terrible alarm won't compromise any insurance policy unless you lied to the company and told them it was something it wasn't?