First Alert 10-Year Battery Carbon Monoxide/Smoke Alarm - PC910

The First Alert 10-Year two-in-one Photoelectric Smoke Detector with Carbon Monoxide Alarm features our new Slim Design and Maximum Protection. It's protection at its finest and lasts a full 10 years without the hassle and expense of twice-a-year battery changes. The sleek new design of the First Alert PC910 combination CO and smoke alarm also adds an element of style to safety and is half the size of standard alarms.