Kidde Hardwired Smoke Detector Alarm with Light and Battery Backup, Battery Included, Interconnectable

From the Manufacturer

There are only minutes to escape a house fire. The sooner you hear the smoke alarm, the sooner you can get out safely. Kidde interconnected Ionization smoke alarms provide early warning against fire by linking together the smoke alarms in your home, dramatically increasing your ability to hear an alarm anywhere, regardless of where the fire starts. This unit is a 120V AC powered ionization smoke alarm with a safety light and 9V battery back up. This premium smoke alarm has the ability to function as a stand alone unit or in an interconnected system. It includes Hush feature, a test button and a quick-connect power harness. Install UL listed smoke alarms on every floor of your home, in hallways, inside bedrooms and outside of sleeping areas. Replace smoke alarms every 10 years. Ionization sensing alarms may detect invisible fire particles associated with fast flaming fires sooner than Photoelectric alarms. Studies show both types will effectively detect either type of fire. For optimal protection, install both smoke alarm technologies in your home.