A carbon monoxide (CO) alarm is a safety device that detects the presence of carbon monoxide gas in the air. CO is a colorless, odorless, and poisonous gas that can be produced by faulty appliances, furnaces, or fireplaces. CO alarms are designed to alert you to the presence of CO so that you can take steps to ventilate the area and evacuate the building if necessary.
CO alarms typically have a low battery indicator that will activate when the battery is running low. When the low battery indicator activates, you should replace the battery as soon as possible. If you do not replace the battery, the CO alarm will not be able to function properly and may not be able to alert you to the presence of CO.
