FIRST ALERT CO400A Carbon Monoxide Alarm

The First Alert CO400A is a battery powered carbon monoxide alarm that runs on AA batteries so it can be placed wherever it's needed. It has a loud built in 85dB siren that sounds when the CO is detected to alert family members. It is for use indoors and is commonly installed in homes, cottages, RV's, motor homes for bedrooms, basements, living rooms or near fireplaces or appliances that may potentially emit carbon monoxide. It uses an electrochemical sensor for increased accuracy and features an easy access battery door, mute/silence button and end of life timer to alert when replacement is needed.