The First Alert SMCO500V Interconnect Battery-Operated Combination Smoke & Carbon Monoxide with Voice & Location Alerts helps provide an early warning and guide your escape to safety. Also equipped with First Alert's Precision Detection advanced sensing technology that meets new industry standards.
- Precision Detection technology helps reduce cooking nuisance alarms and provides early warning. 
- Through early warning interconnect, when one alarm sounds, all compatible* alarms will sound 
- Voice & location alerts tell you what the danger is and its location to help you escape safely 
- Battery-operated alarm is easy to install and maintain 
- Provides reliable 2-in-1 protection against both smoke and carbon monoxide 
- Test/silence button for efficient testing to ensure alarm is working properly