Originally Posted By: cbuell
This post was automatically imported from our archived forum.
http://www.nachi.org/bbsystem/usrimages/more/How%20e038.jpg ]
http://www.nachi.org/bbsystem/usrimages/more/How%20e038.jpg ]
Originally Posted By: DGrattan
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Did you happen to try the doorbell??
Originally Posted By: bgriffin
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Looks like it might be a fire alarm siren. Had something similar in some apartments I did some work for a while back.