First Alert BRK SMI100-AC Hardwired Smoke Detector with Battery Backup - 6-Pack

BRK Electronics smoke alarms are designed to be easy to install, easy to maintain, and quality-engineered for years of virtually maintenance-free service. 

• 6 pack of hardwired smoke alarms, includes battery backup for power outages
• Tamper resistant locking pins, single button silence/test and loud 85Db alarm
• 120-Volt AC power with 9-volt battery backup (included) to keep alarm functioning during power outage
• Open mounting design for easy installation with side load battery compartment for quick replacement and interconnect able up to 18 units (12 smoke, 6 co/heat/relay)
• 10-Year limited
• Faster turnarounds on job sites with the easy-to-install, most-trusted alarms in home safety