• Includes Carbon Monoxide Alarm along with the Smoke/Fire Detector all-in-one unit
• 10-Year sealed battery means no battery replacements for 10-year life of the alarm
• Nuisance free photoelectric technology reduces false alarms that result from cooking and shower steam
• Meets UL standards & complies with legislative requirements for 10-year battery operated smoke alarms
• 10-year Limited Warranty