Carbon Monoxide Alarm, First Alert, 85 dB, Alarm: Audio, Electrochemical Sensor, White

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.

• The most accurate CO sensor available
• Comprehensive warning features
• Simple and easy-to-use
• CO detector alerts you to carbon monoxide
• Electrochemical CO sensor is most accurate technology available
• Battery-operated design works almost anywhere
• Loud 85 dB alarm sounds when CO levels are elevated
• Single test/silence button for simple operation