Replace your carbon monoxide (CO) alarms before they expire - Fire Line

The Seattle Fire Department recently responded to three residences where a person called 9-1-1 after their CO alarm beeped intermittently. Upon further investigation it was discovered that there was no emergency but that the CO alarms in question were sounding every 30 seconds to indicate expiration. CO alarm life span CO alarms have a life […]

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Battery-operated carbon monoxide alarm with backlit digital display. Uses an electrochemical carbon monoxide sensor, the most accurate CO detection technology available, to detect the CO you can't see, smell, or taste in the air. An easy-to-read backlit digital display allows a quick view current and peak CO levels. Powered by two replaceable AA batteries, offering peace of mind even during power outages. Battery life varies according to use and application.

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How Often Should Carbon Monoxide Detectors Be Replaced?

This stupid thing beeps even after changing battery. Why?!?! Am I supposed to do something more? : r/fixit

How Often Should Carbon Monoxide Detectors Be Replaced?