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Why is my FA6720-R beeping?

General

23 April 2026

A single chirp from the FA6720-R typically means the sealed battery is reaching end of life. Because the battery is sealed and tamperproof, it cannot be replaced. Use the Sleep Easy function to silence low-battery chirps for 8 hours overnight. When the alarm reaches end of life after 10 years, replace the entire unit. See our guide to maintaining and testing your heat alarm for more detail.

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