The domestic alarm in question has an FM4000E control panel, two sounders (one wirelessly connected), and battery-powered wireless sensors together with a wireless keypad. The system never worked from D+2 following our removal here, it hasn't been serviced since, and the sensor batteries have long since become exhausted.
Today I'd switched off the upstairs lighting system to do some work on a bathroom light switch; I believe the alarm is powered from this circuit. After about an hour, the house sounder went off, for about
20 seconds, and then thankfully stopped. I'm guessing that the battery powering the control box is failing, and the sounder was a warning of this.You can probably guess I don't like this system much, and I would much prefer it wasn't 'live' at all. If I remove the fuse in its mains supply, and put up with the sounder going off again for a short period, would the system die gracefully?
I should add that in the past I opened the control box, which set off an internal alarm, but it was easy to find the speaker plug and disconnect it.
Are there any magic codes I could type in to 'kill' the system? The installer seems to have gone bust, just to add to the fun, but if I can DIY a 'kill', that would be in the spirit of the group....
Any observations or advice gratefully received. TIA.