First Alert 10-Year 2 in 1 Photoelectric Smoke Detector with Carbon Monoxide Alarm, PC910

Combining safety and style, the First Alert PC910 Combination Photoelectric Smoke and Carbon Monoxide Alarm helps protect your home from fire and dangerous carbon monoxide levels by providing up to a decade of uninterrupted monitoring. This smoke detector uses an ultra-reliable photoelectric sensor to detect smoke from smoldering fires, and it features a patented smoke entry system to help ensure thorough coverage. The unit also features an advanced electrochemical sensor that detects carbon monoxide leaks from multiple sources such as faulty fuel-burning appliances and blocked chimneys. A built-in 10-year lithium-ion battery provides continuous power during the lifetime of the alarm. Measuring a fraction of the size of traditional smoke and CO alarms, this stylish unit is designed to mount unobtrusively on a wall or ceiling. A loud siren sounds if smoke is detected, and a convenient test/silence button lets you easily check whether the alarm is functioning and mute false alarms.