First Alert 120V Hardwired Smoke Detector with 9V Battery Backup and Silence

Keeping your home and family safe since 1958, First Alert is built on reliability, quality and trustworthiness. Continuing to create innovative products, you can count on First Alert to make your home a safer place. The reliable ionization sensor in the 9120B provides the earliest possible warning of a fast-flaming fire. With the battery backup, the 9120B will protect you and your family even during a power outage

Product Information:

Interconnectable
• Interconnect the 9120B with up to 12 First Alert or BRK hardwired alarms and up to six other compatible devices like bells, horns or repeaters. When one alarm sounds, all other alarms are triggered, providing coverage of larger spaces.
Battery Backup
• Featuring battery backup, First Alert 9120B will keep you safe even during power outages.
Alarm Reset
• The 9120B will automatically reset when the smoke or carbon monoxide gas clears.
Covered Under a 10 Year Limited Manufacturer Warranty

Specifications:

• Power Source: Battery, Hardwired
• Battery Requirements: 1 Alkaline, Lithium Battery
• Diameter: 5-5/8"
• Depth: 1-7/8"
• Voltage: 120V