First Alert 10-Year 2-Pack Battery-Operated-Volt Photoelectric Sensor Smoke Detector

Nuisance free and hassle free, slim style smoke alarm. It's protection at its finest. This alarm adds an element of style to safety. Half the size of the standard alarm with all the protection needed to keep what matters most safe and secure. Alarm includes a 10 year battery to cut down on hassle and costly battery replacements. The bright LED escape light helps to light your path to safety.