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My Nest CO2/smoke alarm emits a high frequency chirping sound intermittently. Started today.

rgaila
Community Specialist
Community Specialist

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Original Poster: Hank Messick 

After many months of perfect operation our CO2/smoke alarm is making high frequency chirping sounds intermittently.
 
1 REPLY 1

rgaila
Community Specialist
Community Specialist
Hi Hank Messick,
 
I've linked a help centre article below that explains what the sound means and what to do.
 
 
-From david.king, Gold Product Expert.