Smoke & CO Detectors
Carbon Monoxide Detector Beeping
A CO detector may signal a low battery, the end of its service life, or the presence of carbon monoxide.
Safety first
If a CO alarm is sounding continuously, or anyone feels dizzy, nauseated, or has a headache, leave the home immediately and call 911.
Step-by-step instructions
- 1
If the alarm sounds continuously or anyone feels dizzy, nauseated, or has a headache, leave immediately and call 911.
- 2
For a single chirp every 30–60 seconds, it usually means a low battery.
- 3
Replace the battery and press Test.
- 4
Check the manufacture date—detectors expire and need replacing.
- 5
If it still chirps or shows 'End of Life,' submit a request.
How-to video
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