First Alert 3120B dual sensor smoke detector

• Make: First Alert
• Model code: 3120B
• Style: Photoelectric
• Type: Smoke

Features photoelectric and ionization sensors for increased detection The photoelectric sensor detects smoldering fires from objects like cigarettes burning on furniture or in trash cans The ionization sensor detects fast-flaming fires like erupting kitchen grease fires or combustibles Hardwired alarm includes battery backup for power outages A single button makes alarm easy to test monthly, or silence during a false alarm Two latching features help indicate a low battery or the originating alarm in a system Optipath 360 patented technology provides 360 degrees of access to the smoke alarm