First Alert Photoelectric Smoke & Carbon Monoxide Combo Alarm

The First Alert Slim Photoelectric Smoke and Carbon Monoxide Combo Alarm with 10-Year helps protect your home from 2 potentially deadly threats by providing up to a decade of uninterrupted monitoring. Equipped with dual sensors, this low-profile alarm detects smoke from slow-burning, smoldering fires and elevated carbon monoxide levels. This detector has a slim, contemporary design that mounts unobtrusively on a wall or ceiling. A built-in 10-year provides continuous, with no need to ever worry about changing the during the lifetime of the alarm.