First Alert PC900 Designer Photoelectric Smoke and Fire Alarm

The First Alert PC900 Combination Smoke and Carbon Monoxide Alarm provides maximum protection and has a new sleek, slimmer design, which adds an element of style to safety. The PC900 has a modern, thin square design that's less than an inch thick (half the size of a standard alarm), while still providing all the protection you need to keep what matters most safe and secure. The PC900 is unique because it features (2) alarm systems that work independently to detect both evidence of fire and carbon monoxide (CO) through the electrochemical carbon monoxide sensor and patented smoke entry system that allows a direct smoke path to the photoelectric sensor to detect regular and slow, smoldering fires. The combination of the smoke and CO (carbon monoxide) sensor and First Alert's Nuisance Free Technology will reduce false alarms that result from cooking and shower steam.This combination alarm includes power LED and alarm indicator, end of life signal and mute and silence button so you can tes