Co2 detectors do have a life span of about 2 years and keep in mind that carbon monoxide does NOT have a smell, thus the point of the detector. I would do a test, most of these units have a test feature. Then unplug and remove battery, then plug back in.
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Co2 detectors do have a life span of about 2 years and keep in mind that carbon monoxide does NOT have a smell, thus the point of the detector.
I would do a test, most of these units have a test feature. Then unplug and remove battery, then plug back in.