BRK First Alert SMI100-AC Hardwired Smoke Alarm+ SLED177 Strobe Light

The First Alert SMI100-AC Interconnect Hardwired Smoke Alarm with Battery Backup incorporates First Alert's Precision Detection sensing technology to meet modern industry standards. This hardwired smoke detector with battery backup is compatible with UL 217 8th edition standards and includes an SLED177 strobe light for visual alerting. the hardwired smoke detector is designed for easy installation and cmpatibility with other interconnectable alarms, creating a comprehensive home alarm system for early warnings. Features Advanced Precision Detection Technology: Adheres to UL 217 8th Edition standards to minimize false alarms from cooking while deterring reliable fire emergency warnings. Strobe Light Inclusion: equipped with a SLED177 strobe light for clear visual alerts. Visual Alaram Indicator: Highlights the specific alarm that initiated the warning.  Interconnected Alert System: Activating one alarm triggers all connected devices for comprehensive notification. Device integration: Compatible with up to 12 additional First Alert?BRK detectors and six other linked devices. Battery Backup: Ensures operation during power outages for uninterrupted safety.    Quick Connect Plug: Simplifies installation without the need for rewiring. Testing/Silence Button: Enables convenient testing and temporary muting of the alarm.  Low Battery Notification: Alerts you when the backup battery needs replacement. End-of-Life notification: Notifies you when the alarm has reached the end of its operational lifespan. Specs Dimensions: 5.6" x 5.6" x 1" battery operated (optional) 9V backup battery 10 year limited warranty  What's in the Box (1) BRK First Alert SMI100-AC (1) Strobe LED Transmitter  (1) 9V Battery Backup Mounting Bracket Easy Adapter plug  Documents User Manual