Dual sensor smoke alarm

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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. Style: Dual Sensing Smoke Alarm 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. The unit shall incorporate both an ionization smoke sensor and a photoelectric smoke sensor with a nominal alarm sensitivity of 0. The First Alert Smoke and Fire Alarm comes equipped with two different sensors to provide an early warning. The ionization sensor detects flaming fires, such as grease fires or wastebasket fires, and the photoelectric sensor detects smoldering fires, such as when a lit cigarette ignites clothing or upholstery.

This alarm’s dual-sensor technology will detect smoke from both smoldering and flaming fires (and maybe the occasional burnt piece of toast). It also features OptiPath 3patented technology, which means air (or smoke ) can enter the device from all sides. And with a battery that lasts for years , you won’t have to worry about whether or not the batteries will run out every few months. What is the best smoke alarm? How do I disable a smoke alarm?

Are fire alarms and smoke detectors the same thing? Free 2-day Shipping On Millions of Items. The Top 1Retailers Can Be Found on eBay. Many fire safety organizations recommend the installation of dual sensor smoke alarms because they cover a broad range of fires, making them much safer than single sensor alarms. These are dual sensor and are designed to alert you to both smoldering low-flame fires and high intensity rapid flame fires.

Battery Powered ‘stand-alone’ Smoke Detector. A yellow protective cap may have been left on one of the two smoke sensors inside affected products during the manufacturing process. If present, it compromises the smoke alarm’s ability to detect smoke. Dual-sensor smoke detectors use photoelectric and ionization technology to detect both smoldering and fast-moving fires.

Overall, the First Alert Dual - Sensor Smoke and Fire Alarm is a highly rated no-frills home smoke detector that you can trust to keep your family safe. Dual detectors combine both ionization and photoelectric sensors in a single smoke alarm. Experts, like the National Fire Protection Association (NFPA) and the U. Fire Administration (USFA), overwhelmingly agree that a dual smoke detector is by far the safest way to go — or to have both types of single sensor smoke alarms installed in your home. As a result, dual sensor smoke detectors are the only ones it recommends.

Kidde recalls dual - sensor smoke detectors due to a manufacturing flaw. Get the news on the recall of almost 500Kidde smoke alarms from Consumer Reports. But in the last decade or so, dual sensor smoke alarms hit the market running. Some models require a single sensor to be triggered before the alarm sound and this often in more false alarms. This means that a dual - sensor alarm could theoretically have a non-functional ionization sensor , but as long as the photoelectric sensor makes the alarm soun it meets UL 2requirements.

Dual Sensor Smoke Alarms - Dual sensor smoke alarms make use of the photoelectric and ionization sensors for its operation. FireX Direct Wire Dual Sensor Photoelectric Smoke Alarm. This type of smoke alarm sensor uses radiation and an ionization chamber to detect smoke. The ionizing radiation helps detect small amounts of smoke in the air, as with a flaming fire.

When smoke enters the sensor chamber, the current of the ionizing radiation is disrupte which triggers the alarm. Ionization sensors are prone to nuisance alarms, mostly from cooking and shower steam, and people often disable them over that kind of annoyance.