First Alert 3120B Smoke Alarm, 120 V, Ionization, Photoelectric Sensor, 85 dB, White

The First Alert hardwire dual photoelectric and ionization sensor smoke alarm with battery backup is designed to provide peace of mind. The photoelectric and ionization sensors on this fire detector alert you to both smoldering and fast-flaming fires, offering comprehensive detection and early warning. The 85 dB fire alarm can connect to other compatible hardwired detectors for larger spaces.

Features:

• Hardwired alarm includes battery backup for power outages
• Photoelectric and ionization sensors provide comprehensive fire detection
• A single button makes alarm easy to test monthly or silence during a false alarm
• Two latching feature help to indicate a low battery or the originating alarm in a system
• OptiPath 360 patented technology provides 360 deg of access to the smoke alarm