The Kidde C3010-D is a 10 year, sealed battery, carbon monoxide alarm which includes a digital display feature and uses electro-chemical sensing technology to protect you and your family from the dangers of carbon monoxide. The C3010-D alarm will automatically activate when it is attached to the mounting bracket. At the end of alarm life, the unit will chirp, indicating the alarm is in need of replacement. A screwdriver can be used to deactivate the unit, stopping the end of-life chirp and making it safe for disposal. The inside cover of the mounting bracket features a quick reference guide for what to do in case of an alarm. This easy-to-install alarm is suitable for all living areas and has a 10 year life and limited warranty.