Kidde 1275 Hardwire Smoke Alarm with Hush Feature and Battery Backup, Twin Pack

From the Manufacturer The Kidde 1275 Lifesaver 120-Volt AC Hardwired ionization smoke alarm with battery backup and hush feature hooks directly into your household power system and has a battery back-up feature so that you can always feel secure. The convenient test button allows you to easily perform the weekly tests suggested by safety experts. A flashing red LED indicator and a green LED "power on" indicator allow you to monitor the proper performance of your smoke alarm. Effective fire alarms save lives, replace smoke alarms every 10 years. Ionization sensing alarms may detect invisible fire particles 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. This smoke detector has a Quick Connect wiring system that makes it simple to install the unit and easy upgrade to a new detector when the time comes. The multi-station Interconnect system allows you to easily connect multiple detectors together so that when one alarm triggers in an area of the house, condo or apartment, the others sound at the same time. Units must all be Kidde compatible.