battery change?

Our alarm goes off when there is a power cut and I am thinking of putting a new battery in the outside alarm box as it is about 5 or 6 years old. Do I have to turn the power off to do this as I know the alarm will sound as soon as I do? SECURIT 700L
Ian, January 2009


done
The battery outside is ok as it is working, it's the battery inside your control panel that has 'had it' and needs to be replaced

acorn, January 2009
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