Dual Sensor Smoke and Fire Alarm for Home

While different sensing technologies in smoke alarms react differently to certain types of fires, the First Alert Sa3210 dual sensor ten-year alarm utilizes both ionization and photoelectric sensors to provide the earliest possible warning, regardless of the fire type. Photoelectric sensing technology is more sensitive than ionization sensing technology at detecting smoldering fires, such as those caused by cigarettes burning in couches or bedding, while ionization sensing technology is generally more sensitive at detecting flaming fires, like kitchen grease fires or paper burning in a wastebasket. This alarm is powered by sealed, ten-year lithium batteries, offering continuous protection for a decade without the need for battery replacement.

The First Alert Sa3210 meets UL217 standards and complies with legislative requirements for 10-year battery-operated smoke alarms. It includes mounting hardware and is backed by a 10-year limited warranty. The front cover design may vary, but the product function remains the same. This alarm complies with all current 10-year legislation in U.S. states and cities where required.

The 10-year lithium-ion battery provides continuous power for the life of the alarm, ensuring continued monitoring even during power outages. The loud 85-decibel siren sounds to alert you to danger, and the hardwired alarm includes a battery backup for power outages. To ensure complete protection, it is recommended to place one alarm on each level of your home and in each bedroom.

First Alert has been the most trusted brand in home safety since launching the first residential smoke alarm in 1958, according to a First Alert Brand Trust Survey conducted in February 2018. The company's warranty extends ten years from the date of purchase, with proof of the original sales receipt, and the product should be free from defect in material and workmanship.

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