First Alert 3120B Photoelectric and Ionization Sensor Smoke Alarm

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-decibel fire alarm can connect to other compatible hardwired detectors for larger spaces.

Dual Sensors Detect Two Kinds of Fire
The First Alert Dual Sensor Smoke Alarm 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, while the ionization sensor detects fast-flaming fires like erupting kitchen grease fires or combustibles. The dual sensors on this fire detector provide you and your family with the earliest warning possible.

Designed for Fewer False Alarms
Smoke from cooking or even shower steam can sometimes set off a smoke alarm. The photoelectric sensor on the First Alert Dual Sensor Smoke Alarm is sensitive to smoldering fires while reducing false alarms. The photoelectric sensor is smart enough to distinguish real threats from everyday activities, resulting in fewer annoying false alarms.

Battery Backup for Detection in a Power Outage
The fire detector is hardwired, but it also features a battery backup to help ensure the smoke alarm can still function in the event of a power outage. The unit requires two AA batteries, and comes with a low-power indicator to alert you when they need to be replaced. A one-touch silence/test button makes it easy to test the detector monthly or silence it during a false alarm.

Optipath 360 and Interconnectivity for Larger Spaces
The First Alert Dual Sensor Smoke Alarm easily connects to other compatible hardwired alarms, making it the perfect solution for larger buildings such as institutions, dormitories, , hotels and other multi-family dwellings that use single station smoke detectors. The smoke and fire detector includes patented Optipath 360 technology that provides 360 degrees of access to the alarm, and its 85-decibel siren is designed to be loud enough to awaken even the soundest of sleepers.

As Featured on Amazon.com

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