FirstAlert Basic Plug-In Carbon Monoxide Alarm - CO600 (1039730) - Wired - 120 V AC - 85 dB

The First Alert CO600 Plug-in Carbon Monoxide Alarm utilizes an electrochemical carbon monoxide sensor that lasts for up to 5 years to detect carbon monoxide. This carbon monoxide detector plugs into any wall outlet. When carbon monoxide levels become elevated, a loud 85dB alarm alerts you to the threat.