First Alert CO400A Battery Powered Carbon Monoxide Alarm

• SAME AS CO400A ASIN: B004Y75ZS2

• Battery operated, 9V battery included

• Mute button, mutes unnecessary alarms. Also tests alarm function with same button

• Low battery Signal mute, quiets low battery Signal for up to 8 hours

• Electrochemical sensor, most accurate technology available for detecting carbon monoxide* *compared to other common sensing technologies

• End of life timer, alarm chirps when it is time to replace it

• Care: Vacuum the CO Alarm cover once a month, using the soft brush attachment. Never use water, cleaners, or solvents, since these may damage the unit. Test the CO Alarm again after vacuuming.