First Alert Dual-Sensor Smoke and Fire Alarm, Battery Powered, Frustration-Free Packaging, SA320CN

Help keep your family safe with this battery operated smoke alarm; It requires no rewiring for installation and provides continuous monitoring even if there’s a power failure

Equipped with both a photoelectric and ionization sensor to quickly detect both fast burning, and smoldering fires

Single test/silence button lets you easily check alarm function and mute false alarms; Use Polaroid AA batteries for best results

Loud 85 decibel siren sounds to alert you to danger

To ensure complete protection make sure to place one 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 (Based on a First Alert brand trust survey in February 2018)

SA320FF, 0029054015358, 029054015358

While all smoke alarms are designed to detect smoke, different sensing technologies react differently to certain types of fires. This alarm makes use of both ionization and photoelectric sensors to offer the earliest possible warning regardless of the type of fire. Sometimes a fire can smolder for hours before erupting into flames. Photoelectric Sensing Technology is more sensitive than Ionization Sensing Technology at detecting these sorts of smoldering fires, like those caused by cigarettes burning in couches or bedding. Other fires erupt into flames quickly, like kitchen grease fires or fires fueled by paper burning in a wastebasket. Ionization Sensing Technology is generally more sensitive than Photoelectric Sensing Technology at detecting these sorts of flaming fires.

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