Question: why does my carbon monoxide alarm keep beeping every 30 seconds?
Answer: When your carbon monoxide alarm reaches its end of life, the alarm will beep every 30 seconds to inform you the alarm unit needs to be replaced. The alarm will beep after 7 to 10 years of use. This 30 second beep is similar to a low battery alarm. To know if the unit is at end of life, replace batteries first.