Protect you and your family with this 10-Year Carbon Monoxide Alarm C3010D. Its sealed long life battery alarm provides up to a decade worth of continuous operation. This Kidde alarm is equipped with a test-reset button that allows you to ensure the components are working properly. It also has an automatic alert that lets you know when it is time to replace the alarm. The digital alarm is battery powered which allows it to work even during power outages. it also comes with a digital display that not only provides continuous monitoring but also notifies the user of any carbon-monoxide events from the past 14 days.