Hardwired Smoke Alarm with Battery Backup (48 pack, individually boxed)

Save with these individually boxed 48 unit contractor pack of the popular First Alert 9120B Smoke Detector. These 120VAC hardwired alarms wire directly into your homes electrical system with battery backup and mute button. Battery backup ensures alarm works even during power outages. You can interconnect this detector with up to 18 other First Alert® or BRK® hardwired alarms.

This smoke & fire alarm is for you if:
• You want alarms wired directly into your home's electrical system with the added safety of a battery backup
• You want to install more than one alarm

Where To Place Safety Smoke Alarms: One in every bedroom, and at least one on every level of the home.
First Alert Smoke Alarm 9120B-48P

• Loud 85dB alarm.
• Tamper resistant locking pins.
• Single button silence/test.
• 120V AC power with 9V battery backup (included) to keep alarm functioning during power outage.
• Open mounting design for easy installation with side load battery. compartment for quick replacement.
• Interconnectable up to 18 units (12 smoke, 6 CO/heat/relay).
• 10 Year Limited Warranty.

• English Manual