First Alert SA9120BPCN Hardwired Smoke Detector with Battery Backup

Dimensions (Overall): 5.5 Inches (H) x 5.5 Inches (W) x 1.99 Inches (D)
Weight: .67 Pounds
Includes: Battery
Package Quantity: 1
Requires Hardwired Installation: Yes
Battery: 1 9-Volt Alkaline, Required, Included
Warranty: 10 Year Limited Warranty. To obtain a copy of the manufacturer's or supplier's warranty for this item prior to purchasing the item,
•Keep your family safe with this hardwired smoke alarm; the battery backup means constant monitoring, even if there's a power failure
•Equipped with an ionization sensor, this smoke alarm reliably detects smoke from fast-flaming fires and alerts you with an 85-decibel alarm
•To ensure complete protection make sure to place one on each level of your home and in each bedroom
•Can connect to other compatible BRK or First Alert smoke detectors, to ensure all alarms will sound when smoke is detected
•Simple to use, with a single test/silence button, and side-load battery compartment; tamper-resistant locking brackets and universal mounting brackets make installation easy
•Rigorously tested to meet UL standards
First Alert Replacement Hardwired Smoke Alarm (Model SA9120B) is 120V AC powered alarm with 9V battery backup in the event of power failure. The alarm can be interconnected with up to 12 other compatible smoke alarms and six compatible devices such as bells and horns. Features a universal mounting bracket and tamper-proof locking pins, plus adapter plugs to replace other non-First Alert alarms without rewiring. Alarm includes a loud, 85dB siren and single button test/silence. Meets UL217 standard and backed by 10 year limited warranty.