Install convenient 2-in-1 protection against both smoke and carbon monoxide with the First Alert SMICO105-AC Hardwire Interconnect Smoke and CO Alarm with 10-Year Battery Backup. Meets new industry standards and can interconnect with other compatible detectors to create a whole home alarm system to help provide an early warning.

• First Alert's Precision Detection advanced sensing technology complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency
• 10-Year battery backup provides continuous protection during power outages
• Through early warning interconnect, when one alarm sounds, all compatible* alarms will sound
• Quick Connect Plug allows for easy installation with no need to rewire
• Alarm indicator visually identifies the unit that initiated the alarm
• End-of-life warning lets you know when it’s time to replace the detector
• Test/silence button for efficient testing to ensure alarm is working properly