My Scantronic 9800 alarm goes off without warning?

You mentioned his battery Alarm,

Hint, Hint,

Wonder if the penny's dropped ? ,

As acorn has said " use the search option above ", this issue has been covered many times +[ ]-

manno
August 2012

When was it last serviced/battery changed?

Alarm
August 2012

The display shows different zone fault each time so unable to identify specific area to examine

Ged
August 2012

Q. Has anyone any experience of the problem and solution ? A. Yes. Even the Search box at the top of every page knows the answer.

So what does the display say when this happens, you see it every time, you have to turn off the noise if nothing else don't you?

acorn
August 2012