Universal Security Instruments AC Hardwired Combination Smoke and Carbon Monoxide Detector with Battery Back-Up

Patented technology provides the benefits of both photoelectric and ionization in one alarm. Provides protection against fast-flaming fires, smoldering smoke, carbon monoxide and natural gas (or methane). Responds 87-percent faster to slow smoldering fires and responds quickest to fast flaming fires. 120-Volt AC hardwired alarm with backup battery is suitable for houses, apartments and mobile homes. Features a quick activation pull-tab and a front-loading battery drawer for replacement without removing the alarm from the bracket. Comes with a 7 year limited warranty. Manufacturer part number MDSCN111.