First Alert 1043567 Photoelectric Smoke & Carbon Monoxide Alarms, 6 Pack GiftItems Groovy rings on the bottom

Groovy rings on the bottom distributes even heat

Measures: 6-3⁄8" x 4-11⁄16"

Interior and exterior

New sleek texture gives containers a modern look

The green color blends with most landscapes

First Alert 1043567 Photoelectric Smoke & Carbon Monoxide Alarms, 6 Pack GiftItems Groovy rings on the bottomHighlights: 6 pack Hardwired talking photoelectric smoke & carbon monoxide alarms Features photoelectric smoke sensors & electrochemical carbon monoxide sensors Voice alarm not only alerts you whether the threat is smoke or carbon monoxide But also tells you the location of the danger Pre program up to 11 locations in your home Inter connectable & can be installed & linked with up to 18 compatible devices So when one triggers All alarms sound, 85dd