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scantronic 9200 alarm bell rings when mains fails?

when mains fails my external alarm bell rings continuously until mains restored How do i prvent this
bill, September 2011
Possibly :D

Alarm, September 2011
do you think it needs a battery ??????? :-)

gts, September 2011
alarm guy.

gts, September 2011
Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery Battery

Take your pick, or use the SEARCH facility here, christ are people really this thick now days?
Do you not search before asking a question~?

Alarm, September 2011
obvious ,to us anyway ,acorn

gts, September 2011
SD, don't you know?

acorn, September 2011
I would think that the internal battery has failed. replace it.

SD, September 2011
link Click here to see other fixes for Scantronic 9200.