scantronic 9200 alarm bell rings when mains fails?

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