FIRST ALERT(R) 1039718 Battery-Powered Carbon Monoxide Alarm

• Model number C0400;• Alerts to dangerous carbon monoxide levels;• Most accurate electrochemical carbon monoxide sensor technology;• Battery-operated design works almost anywhere;• Loud 85dB alarm sounds when carbon monoxide levels are elevated;• Single test/silence button for simple operation;• 5-year limited warranty;• Includes 9V battery;Length: 8.50"Width: 6.75"Height: 2.25"