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optia compact alarm rings after power cut?

My optima comact has worked fine for 8 years. Toady after the power was cut and restored the alarm won't stop ringing. As soonas the power is restored the alarm rings, any help is appreciated.
paddy, March 2007
Sorry... check annually, replace every 5 years.

Pete, April 2007
your backup battery is probably shot..... replace anually !

Pete, March 2007
link Click here to see other fixes for Optima.