First Alert BRK 10-Year Battery 6-Pack Hardwired Ionization Sensor Smoke Detector 1046851

120V AC/DC Interconnectable Ionization Smoke Alarm w/10YR Sealed Battery Backup (6 Pack) Precision Detection technology helps reduce cooking nuisance alarms and provides early warning. 10-Year battery backup provides continuous protection during power outages with no battery replacements required Latching Alarm Indicator visually identifies the unit that initiated the alarm or low battery Test/Silence button allows for efficient testing and temporarily silences alarm for up to 8 hours Operating Manual PDF