First Alert SMCO200V Battery-Operated 2-in-1 Smoke and CO Alarm with Voice and Location Alerts, 1046795PT

Provides early warning from both threats to help you and your loved ones safely escape. Alarm sound level: 85 dB at 10 ft. End-of-life warning lets you know when its time to replace the alarm. Voice and location alerts tell you what the danger is and its location to help you escape safely; easy-to-program and operate alarm allows you to select from 11 pre-programmed home locations Precision Detection advanced-sensing technology reduces nuisance alarms and detects smoke from synthetic materials which burn hotter and faster, leaving you less time to safely evacuate Battery operated and easy to install for multiple placement options - no electrical rewiring required; works in the event of a power outage. Convenient test/silence button for efficient testing to ensure alarm is working properly.