- Precision Detection advanced sensing technology reduces cooking nuisance alarms and delivers early warning
- Voice & location alerts tell you the location of danger
- Latching Alarm Indicator visually identifies the unit that initiated the alarm or low battery
- Battery backup provides continuous protection during power outages
- Test/Silence button allows for efficent testing and temporarily silences alarm for up to 8 hours
First Alert SM100V-AC, Interconnect Hardwire Smoke Alarm with Battery Backup & Voice Alerts, 1-Pack