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The First Alert CO400 carbon monoxide alarm utilizes a electrochemical carbon monoxide sensor that lasts for up to five years to detect carbon monoxide. This carbon monoxide detector is battery powered, making it portable and easy-to-use anywhere, even in the event of a power outage. When carbon monoxide levels become elevated, a loud 85 dB alarm alerts you to the threat.
BRK FG250B Smoke Alarm, 9 V, Ionization Sensor, 85 dB, Ceiling, Wall Mounting, White
FIRST ALERT 1039746 Carbon Monoxide Alarm with Backlit Digital Display and Battery Backup, Digital Display, 85 dB
FIRST ALERT SA304CN3 Smoke Alarm with Escape Light, 9 V, Ionization Sensor, 85 dB, Alarm: Audible, White
FIRST ALERT 9120B Smoke Alarm, 120 V, Ionization Sensor, 85 dB, White