First Alert PC910V 10-Year 2 in 1 Photoelectric Carbon Monoxide Alarm and Smoke Detector with Voice Alert, White

Combining safety and style, the First Alert PC910V Combination Photoelectric Smoke and Carbon Monoxide Alarm with 10-Year Battery 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. If a threat is detected, the unit alerts you using audible signals, including a loud 85-decibel siren and a programmable voice alarm that indicates the type of threat and its location. A built-in 10-year lithium-ion battery provides continuous power for 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. And thanks to a convenient test/silence button, it is easy to check alarm function and mute false alarms.