1 hour ago, sixwheeledbeast said:

If you went away for a while and the system disturbs the neighbours for long enough, the council can get an order to force entry and have it silenced for you.

Valid point. 
 

The bell box stops ringing when the power comes back. Then it’s just armed so it’s no different to having it on. 

7 minutes ago, FakeIt5362 said:

I mean possibly? I didn’t know if it would be too old to have internal batteries but then I have no idea. 

Battery battery 

4 minutes ago, al-yeti said:

Battery battery 

So there is definitely a backup battery in  the Omega Petite system?

Should be

The noise is made by power from somewhere when you have no mains.

Would expect one battery inside and one outside in the bell.

28 minutes ago, sixwheeledbeast said:

The noise is made by power from somewhere when you have no mains.

Would expect one battery inside and one outside in the bell.

Ah so the problem is probably with the internal battery then because when there’s a power cut the screen just goes dead and the panel buttons don’t work. 
 

Pretty sure the outside battery works just fine ?

5 hours ago, FakeIt5362 said:

Ah so the problem is probably with the internal battery then because when there’s a power cut the screen just goes dead and the panel buttons don’t work. 
 

Pretty sure the outside battery works just fine ?

The panel is around thirty years old, if it hasnt been serviced in that time the battery in the panel would have killed the charging circuit. Replacing the internal battery wont fully fix it, you probably need a new panel too