Burglar alarm?

re CP8L LCD

When the mains is switched off off the outside alarm sounds - how can I override this - so I can do electrical jobs.
Don, May 2022


done
Is there a backup battery in the alarm panel? Is it still OK?

See this:

https://groups.google.com/g/uk.d-i-y/c/n7eckEwsrkc

Gfdt, May 2022