First Alert 3120BA Dual Sensor Smoke Alarm 120V

The First Alert 3120BA Dual Sensor Smoke Alarm combines photoelectric and ionization technologies to provide reliable detection of both smoldering and fast-flaming fires. Hardwired for continuous protection, it includes a battery backup to ensure functionality during power outages. An easy-access test button simplifies regular maintenance, while advanced latching features indicate low battery and alarm origins. Ideal for residential use, this smoke alarm enhances home safety and peace of mind.