EVFC Incident #58 09/17/2017 at 7:19pm - 230 23rd Ave for an Activated Carbon Monoxide Alarm

Called out for a carbon monoxide alarm. Owners replaced battery and was still going off. Checked entire house with three separate detectors. No CO readings found. Checked carbon monoxide alarm, it was manufactured in 2009. Advised owner to replace detector. All units cleared at 7:37pm