First Alert SA320CN Dual-Sensor Smoke and Fire Alarm, Battery Powered, Frustration-Free Packaging, White, 1 Pack & First Alert CO400 Carbon Monoxide (CO) Detector, Battery Operated Alarm, 1-Pack

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First Alert SA320CN Dual-Sensor Smoke and Fire Features

• Product 1: 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

• Product 1: Equipped with both a photoelectric and ionization sensor to quickly detect both fast burning, and smoldering fires

• Product 1: Single test/silence button lets you easily check alarm function and mute false alarms; Use Polaroid AA batteries for best results

• Product 1: Loud 85 decibel siren sounds to alert you to danger

• Product 2: Keep your family safe with this easy to use, battery operated carbon monoxide alarm; Battery powered alarms provide continuous monitoring of CO levels, even if there's a power failure

• Product 2: Features an advanced electrochemical carbon monoxide sensor that accurately detects carbon monoxide levels, no matter where the detector is placed in the room.The alarm sequence should last 5-6 seconds. If it does not alarm, make sure fresh batteries are correctly installed, and test it again. If the unit still does not alarm, replace it immediately

• Product 2: A loud 85 decibel alarm sounds when CO levels reach dangerous levels

• Product 2: To ensure complete protection make sure to place one on each level of your home and in each bedroom

About First Alert SA320CN Dual-Sensor Smoke And Fire

First Alert SA320CN Dual-Sensor Smoke and Fire Alarm, Battery Powered, Frustration-Free Packaging, White , 1 Pack 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. First Alert CO400 Carbon Monoxide (CO) Detector, Battery Operated Alarm, 1-Pack The First Alert CO400 carbon monoxide alarm uses an electrochemical sensor the most accurate technology available. The permanent sensor lasts up to 5 years. It is powered by a 9V replaceable battery giving you peace of mind even during power outages. The test/silence button silences the alarm and allows you to test its functionality. The unit monitors and re alarms if carbon monoxide level persist sounding a loud 85 decibel horn. No installation is required and the attractive design allows the unit to be placed anywhere you need it. It includes an optional wall mount with no outlet required. An audible and visual battery signal alerts you to replace the battery. Pull down action chart has convenient guide on what to do if an alarm sounds. 5 year limited warranty. Ul listed.