Dual sensor smoke alarm reviews Ultima

dual sensor smoke alarm reviews

First Alert BRK 3120B Review Pros Cons and Verdict Aug 26, 2019 · First Alert by BRK Smoke Detector Reviews: Choosing the Best Smoke Alarm for Your Home. By Celeste Tholen. This dual sensor alarm has both a photoelectric and ionization sensor, so it alerts you of both flaming and smoldering fires. This alarm is a CO sensor and smoke alarm in one. The CO sensor is electrochemical, which is the most

Best Smoke Detectors of 2020 Reviews.org

Amazon.com Customer reviews First Alert Dual-Sensor. The First Alert SA320CN is a Battery operated Photoelectric and Ionization dual smoke sensor alarm. You get the best of both worlds. The protection from the Fast flaming fires with the Ionization technology and the Slow burning smoldering fire protection with the Photoelectric., The First Alert SA320CN is among the best available wireless smoke detectors for its dual-sensor capabilities and broad-ranging support channels. Equipped with a photoelectric sensor and an ionization sensor, this smoke detector combines two of the most commonly used technologies for early detection of fires in your home..

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. Both sensors in the alarm work together to provide comprehensive smoke and fire detection. Smart Sensor Minimizes False Alarms When you buy a First Alert Dual-Sensor Smoke Fire Alarm online from Wayfair, we make it as easy as possible for you to find out when your product will be delivered.Read customer reviews and common Questions and Answers for First Alert Part #: FAT1039828 on this page. If you have any questions about your purchase or any other product for sale, our customer service representatives are available

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 disrupted, which triggers the alarm. Dual Sensors. Dual sensors include both photoelectric and ionization sensors. These are considered the safest smoke and fire detection The First Alert BRK 3120B smoke alarm is manufactured with dual-sensor capabilities, including a photoelectric sensor and an ionization sensor. Photoelectric sensors are better at detecting the presence of smoke coming from slow-burning, smoldering fires. …

Discuss: First Alert SA3210 Dual Sensor Smoke and Fire Alarm Sign in to comment. Be respectful, keep it civil and stay on topic. We delete comments that violate our policy, which we encourage you Jun 28, 2017 · I have installed the following two types of smoke detectors which I believe are among the best out there. 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. First Alert Dual Sensor Battery-Powered Smoke and Fire Alarm

Choosing Between Photoelectric, Ionization and Dual Sensing Smoke Alarms The First Alert Store understands the significance of selecting the appropriate First Alert Smoke Alarm to safeguard families from the many dangers associated with the presence of smoke and fire. First Alert Smoke Detectors utilize differing technologies to achieve the very best result in offering steadfast protection. First Alert Battery Operated Dual Sensor Photoelectric and Ionization Smoke Detector Alarm $ 19 88 /box $ 19 88 /box Alarm Sensor BRK 120-Volt Hardwire Smoke Alarm with Battery Backup Dual Photoelectric and Ionization $ 26 93 $ 26 93. Alarm Sensor Type Dual-Sensor. Pack Size 1. Power Source Hardwired. Battery Back-Up .

The BRK 9120B dual ionization smoke detector features a dual ionization sensing chamber, which enables it to detect the small particles produced by fast, flaming fires. A single button both silences false alarms and allows the user to test the alarm with ease. Best Buy has honest and unbiased customer reviews for First Alert - Dual Sensor Photoelectric/Ionization Smoke and Fire Sensor with Alarm - White. Read helpful

Mar 21, 2018 · Kidde recalls dual-sensor smoke detectors due to a manufacturing flaw. Get the news on the recall of almost 500,000 Kidde smoke alarms from Consumer Reports. Apr 25, 2019 · Free 2-day shipping. Buy First Alert Dual-Sensor Smoke and Fire Alarm, Battery Powered, SA320CN at Walmart.com

Oct 11, 2019 · The Nest Protect Smoke & Carbon Monoxide Alarm is a reasonably priced smart detector with ample functionality. The 2nd generation Nest Protect comes in both battery and hardwired models, and instead of traditional photoelectric or ionization technology, this alarm uses a split-spectrum sensor to monitor for both smoldering and fast-burning fires. Oct 11, 2019 · The Nest Protect Smoke & Carbon Monoxide Alarm is a reasonably priced smart detector with ample functionality. The 2nd generation Nest Protect comes in both battery and hardwired models, and instead of traditional photoelectric or ionization technology, this alarm uses a split-spectrum sensor to monitor for both smoldering and fast-burning fires.

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. Both sensors in the alarm work together to provide comprehensive smoke and fire detection. Smart Sensor Minimizes False Alarms Aug 26, 2019 · First Alert by BRK Smoke Detector Reviews: Choosing the Best Smoke Alarm for Your Home. By Celeste Tholen. This dual sensor alarm has both a photoelectric and ionization sensor, so it alerts you of both flaming and smoldering fires. This alarm is a CO sensor and smoke alarm in one. The CO sensor is electrochemical, which is the most

Dec 17, 2016 · Find helpful customer reviews and review ratings for First Alert Dual-Sensor Smoke and Fire Alarm, Battery Powered, Frustration-Free Packaging, SA320CN at Amazon.com. Read honest and unbiased product reviews from our users. First Alert SA3210 Dual Sensor Smoke and Fire Alarm with 10-Year Sealed Battery uses both a photoelectric sensor as well as an ionization sensor to detect smoke. Also …

Now, on to our smoke alarm reviews! First Alert BRK Hardwire Dual Sensor Smoke Alarm Review #1. View on Amazon. The First Alert BRK 3120B Smoke Alarm is arguably the best dual photoelectric and ionization smoke alarm on the market. This hardwired alarm with battery backup gets rave reviews for its performance and fewer false alarms than similar 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. Both sensors in the alarm work together to provide comprehensive smoke and fire detection. Smart Sensor Minimizes False Alarms

Difference Between Photoelectric Ionization and Dual. While all smoke alarms are designed to detect smoke, different sensing technologies react differently to certain types of fires. The Fist Alert SA3210 Dual Sensor Ten Year Alarm makes use of both ionization and photoelectric sensors to offer the earliest possible warning--regardless of the type of fire., First Alert SA3210 Dual Sensor Smoke and Fire Alarm with 10-Year Sealed Battery uses both a photoelectric sensor as well as an ionization sensor to detect smoke. Also ….

First Alert Dual-Sensor Smoke Fire Alarm Wayfair

dual sensor smoke alarm reviews

BRK 9120B Smoke Alarm Dual Ionization Alarm. Mar 05, 2018 · The Nest Protect is a dual-sensor smoke and carbon monoxide alarm and detects smoke much faster than standard ionization or photoelectric detectors. The Protect stands out because it’s a “split-spectrum” sensor—meaning it detects both fast-burning and …, Consumer Reports says that while any working smoke detector is far better than none at all, the best approach is a combination of smoke detector technologies -- ionization and photoelectric. As a result, dual sensor smoke detectors are the only ones it recommends. Also, some of the best user feedback we spotted was for dual-sensor smoke detectors..

The best smoke detector in 2019 Business Insider

dual sensor smoke alarm reviews

Ultimate Protection Smoke & Fire Alarm Battery-Operated. Stay safe with this First Alert smoke and fire alarm. It uses ionization and photoelectric sensors to detect different types of fires, and its smart sensor can distinguish between real fires and false alarms to keep nuisance alerts to a minimum. https://en.wikipedia.org/wiki/Motion_detector Stay safe with this First Alert smoke and fire alarm. It uses ionization and photoelectric sensors to detect different types of fires, and its smart sensor can distinguish between real fires and false alarms to keep nuisance alerts to a minimum..

dual sensor smoke alarm reviews

  • 5 Best Smoke Detectors Feb. 2020 - BestReviews
  • Amazon.com Customer reviews First Alert Dual-Sensor

  • Aug 26, 2019 · First Alert by BRK Smoke Detector Reviews: Choosing the Best Smoke Alarm for Your Home. By Celeste Tholen. This dual sensor alarm has both a photoelectric and ionization sensor, so it alerts you of both flaming and smoldering fires. This alarm is a CO sensor and smoke alarm in one. The CO sensor is electrochemical, which is the most 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.

    Mar 21, 2018 · Kidde recalls dual-sensor smoke detectors due to a manufacturing flaw. Get the news on the recall of almost 500,000 Kidde smoke alarms from Consumer Reports. The First Alert BRK 3120B smoke alarm is manufactured with dual-sensor capabilities, including a photoelectric sensor and an ionization sensor. Photoelectric sensors are better at detecting the presence of smoke coming from slow-burning, smoldering fires. …

    Discuss: First Alert SA3210 Dual Sensor Smoke and Fire Alarm Sign in to comment. Be respectful, keep it civil and stay on topic. We delete comments that violate our policy, which we encourage you Apr 25, 2019 · Free 2-day shipping. Buy First Alert Dual-Sensor Smoke and Fire Alarm, Battery Powered, SA320CN at Walmart.com

    Dec 17, 2016 · Find helpful customer reviews and review ratings for First Alert Dual-Sensor Smoke and Fire Alarm, Battery Powered, Frustration-Free Packaging, SA320CN at Amazon.com. Read honest and unbiased product reviews from our users. Apr 25, 2019 · Free 2-day shipping. Buy First Alert Dual-Sensor Smoke and Fire Alarm, Battery Powered, SA320CN at Walmart.com

    Choosing Between Photoelectric, Ionization and Dual Sensing Smoke Alarms The First Alert Store understands the significance of selecting the appropriate First Alert Smoke Alarm to safeguard families from the many dangers associated with the presence of smoke and fire. First Alert Smoke Detectors utilize differing technologies to achieve the very best result in offering steadfast protection. Oct 17, 2019 · A dual sensor or ionization smoke alarm should also be properly disposed of, ideally in a waste center which handles hazardous materials. When installing dual sensor smoke alarms, try to install one alarm in every bedroom, to ensure that sleepers will be awakened in the event of a fire.

    Dual-sensor smoke alarms: With dual sensor alarms, you get the best of both technologies. But there are still some drawbacks. Some models require both sensors to be triggered before the alarm will go off, but this may delay the alert from sounding. Consumer Reports has honest ratings and reviews on smoke and carbon monoxide detectors from the unbiased experts you can trust. Top smoke detectors use dual sensors, can be interconnected, and

    Dec 17, 2016 · Find helpful customer reviews and review ratings for First Alert Dual Sensor Smoke and Fire Alarm, SA3210 at Amazon.com. Read honest and unbiased product reviews from our users. Dec 17, 2016 · Find helpful customer reviews and review ratings for First Alert Dual Sensor Smoke and Fire Alarm, SA3210 at Amazon.com. Read honest and unbiased product reviews from our users.

    Dec 17, 2016 · Find helpful customer reviews and review ratings for First Alert Dual Sensor Smoke and Fire Alarm, SA3210 at Amazon.com. Read honest and unbiased product reviews from our users. The First Alert SA320CN is a Battery operated Photoelectric and Ionization dual smoke sensor alarm. You get the best of both worlds. The protection from the Fast flaming fires with the Ionization technology and the Slow burning smoldering fire protection with the Photoelectric.

    Dual-sensor smoke alarms: With dual sensor alarms, you get the best of both technologies. But there are still some drawbacks. Some models require both sensors to be triggered before the alarm will go off, but this may delay the alert from sounding. Dual-sensor smoke alarms: With dual sensor alarms, you get the best of both technologies. But there are still some drawbacks. Some models require both sensors to be triggered before the alarm will go off, but this may delay the alert from sounding.

    dual sensor smoke alarm reviews

    First Alert Battery Operated Dual Sensor Photoelectric and Ionization Smoke Detector Alarm $ 19 88 /box $ 19 88 /box Alarm Sensor BRK 120-Volt Hardwire Smoke Alarm with Battery Backup Dual Photoelectric and Ionization $ 26 93 $ 26 93. Alarm Sensor Type Dual-Sensor. Pack Size 1. Power Source Hardwired. Battery Back-Up . First Alert Battery-Powered 3-Volt Photoelectric Sensor Smoke Detector at Lowe's. The First Alert dual-sensor smoke and fire alarm with 10-year sealed battery makes use of both ionization and photoelectric sensors to alert you to danger

    First Alert Dual-Sensor Smoke and Fire Alarm Battery

    dual sensor smoke alarm reviews

    Dual-Sensor Smoke Detectors - Fire Safety - The Home Depot. Consumer Reports says that while any working smoke detector is far better than none at all, the best approach is a combination of smoke detector technologies -- ionization and photoelectric. As a result, dual sensor smoke detectors are the only ones it recommends. Also, some of the best user feedback we spotted was for dual-sensor smoke detectors., Dec 17, 2016 · Find helpful customer reviews and review ratings for First Alert Dual-Sensor Smoke and Fire Alarm, Battery Powered, Frustration-Free Packaging, SA320CN at Amazon.com. Read honest and unbiased product reviews from our users..

    5 Best Smoke Detectors Feb. 2020 - BestReviews

    Dual Sensor Wired Smoke Alarms Wired Fire Detectors. Mar 21, 2018 · Dual-Sensor Smoke Detectors. These smoke detectors have both ionization and photoelectric sensors and are effective in detecting all types of common fires. One major reviewer only recommends dual sensor detectors, though some other experts say that having separate ionization and photoelectric detectors is are a better alternative., Choosing Between Photoelectric, Ionization and Dual Sensing Smoke Alarms The First Alert Store understands the significance of selecting the appropriate First Alert Smoke Alarm to safeguard families from the many dangers associated with the presence of smoke and fire. First Alert Smoke Detectors utilize differing technologies to achieve the very best result in offering steadfast protection..

    Mar 21, 2018 · Kidde recalls dual-sensor smoke detectors due to a manufacturing flaw. Get the news on the recall of almost 500,000 Kidde smoke alarms from Consumer Reports. 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.

    Approximately 67% of the reviewers of the Kidde Smoke Alarm Dual Sensor Detector on Amazon gave it 4 or 5 stars. One owner appreciated how easy it is to replace the battery and that the alarms are Mar 05, 2018 · The Nest Protect is a dual-sensor smoke and carbon monoxide alarm and detects smoke much faster than standard ionization or photoelectric detectors. The Protect stands out because it’s a “split-spectrum” sensor—meaning it detects both fast-burning and …

    Approximately 67% of the reviewers of the Kidde Smoke Alarm Dual Sensor Detector on Amazon gave it 4 or 5 stars. One owner appreciated how easy it is to replace the battery and that the alarms are 14 Reviews. Special Price $25.20 Regular Price $35.99. Add to Cart. Add to Wish List Compare. Kidde PI2010 Smoke Alarm Dual Sensor with Battery Backup . Rating: 89%. 58 Reviews. Special Price $33.99 Regular Price $45.99. Add to Cart. Add to Wish List Compare.

    Smoke Detector Reviews. Smoke detectors are very important products to have in your home or business to protect you and your family from dangerous fires. A smoke alarm with a dead battery won’t help anyone. Dual Sensor – These types of smoke detectors are actually the best kind you can purchase because they cover both ionization AND Stay safe with this First Alert smoke and fire alarm. It uses ionization and photoelectric sensors to detect different types of fires, and its smart sensor can distinguish between real fires and false alarms to keep nuisance alerts to a minimum.

    14 Reviews. Special Price $25.20 Regular Price $35.99. Add to Cart. Add to Wish List Compare. Kidde PI2010 Smoke Alarm Dual Sensor with Battery Backup . Rating: 89%. 58 Reviews. Special Price $33.99 Regular Price $45.99. Add to Cart. Add to Wish List Compare. First Alert SA3210 Dual Sensor Smoke and Fire Alarm with 10-Year Sealed Battery uses both a photoelectric sensor as well as an ionization sensor to detect smoke. Also …

    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. First Alert Battery-Powered 3-Volt Photoelectric Sensor Smoke Detector at Lowe's. The First Alert dual-sensor smoke and fire alarm with 10-year sealed battery makes use of both ionization and photoelectric sensors to alert you to danger

    Best Buy has honest and unbiased customer reviews for First Alert - Dual Sensor Photoelectric/Ionization Smoke and Fire Sensor with Alarm - White. Read helpful Aug 26, 2019 · First Alert by BRK Smoke Detector Reviews: Choosing the Best Smoke Alarm for Your Home. By Celeste Tholen. This dual sensor alarm has both a photoelectric and ionization sensor, so it alerts you of both flaming and smoldering fires. This alarm is a CO sensor and smoke alarm in one. The CO sensor is electrochemical, which is the most

    Dual-sensor smoke alarms: With dual sensor alarms, you get the best of both technologies. But there are still some drawbacks. Some models require both sensors to be triggered before the alarm will go off, but this may delay the alert from sounding. Dual-sensor smoke alarms: With dual sensor alarms, you get the best of both technologies. But there are still some drawbacks. Some models require both sensors to be triggered before the alarm will go off, but this may delay the alert from sounding.

    Mar 21, 2018 · Kidde recalls dual-sensor smoke detectors due to a manufacturing flaw. Get the news on the recall of almost 500,000 Kidde smoke alarms from Consumer Reports. Jun 28, 2017 · I have installed the following two types of smoke detectors which I believe are among the best out there. 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. First Alert Dual Sensor Battery-Powered Smoke and Fire Alarm

    Best Smoke Detectors of 2020 Reviews.org

    dual sensor smoke alarm reviews

    What are Dual Sensor Smoke Alarms? (with pictures). 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 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..

    Amazon.com Customer reviews First Alert Dual-Sensor. When you buy a First Alert Dual-Sensor Smoke Fire Alarm online from Wayfair, we make it as easy as possible for you to find out when your product will be delivered.Read customer reviews and common Questions and Answers for First Alert Part #: FAT1039828 on this page. If you have any questions about your purchase or any other product for sale, our customer service representatives are available, Dual-sensor smoke alarms: With dual sensor alarms, you get the best of both technologies. But there are still some drawbacks. Some models require both sensors to be triggered before the alarm will go off, but this may delay the alert from sounding..

    First Alert SA320CN-2 Smoke Alarm with Smart Walmart.com

    dual sensor smoke alarm reviews

    First Alert Dual-Sensor Smoke and Fire Alarm Battery. Approximately 67% of the reviewers of the Kidde Smoke Alarm Dual Sensor Detector on Amazon gave it 4 or 5 stars. One owner appreciated how easy it is to replace the battery and that the alarms are https://en.wikipedia.org/wiki/Motion_detector Smoke Detector Reviews. Smoke detectors are very important products to have in your home or business to protect you and your family from dangerous fires. A smoke alarm with a dead battery won’t help anyone. Dual Sensor – These types of smoke detectors are actually the best kind you can purchase because they cover both ionization AND.

    dual sensor smoke alarm reviews


    Dec 17, 2016 · Find helpful customer reviews and review ratings for First Alert Dual Sensor Smoke and Fire Alarm, SA3210 at Amazon.com. Read honest and unbiased product reviews from our users. Dec 17, 2016 · Find helpful customer reviews and review ratings for First Alert Dual Sensor Smoke and Fire Alarm, SA3210 at Amazon.com. Read honest and unbiased product reviews from our users.

    First Alert Battery Operated Dual Sensor Photoelectric and Ionization Smoke Detector Alarm $ 19 88 /box $ 19 88 /box Alarm Sensor BRK 120-Volt Hardwire Smoke Alarm with Battery Backup Dual Photoelectric and Ionization $ 26 93 $ 26 93. Alarm Sensor Type Dual-Sensor. Pack Size 1. Power Source Hardwired. Battery Back-Up . When you buy a First Alert Dual-Sensor Smoke Fire Alarm online from Wayfair, we make it as easy as possible for you to find out when your product will be delivered.Read customer reviews and common Questions and Answers for First Alert Part #: FAT1039828 on this page. If you have any questions about your purchase or any other product for sale, our customer service representatives are available

    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. Dec 17, 2016 · Find helpful customer reviews and review ratings for First Alert Dual-Sensor Smoke and Fire Alarm, Battery Powered, Frustration-Free Packaging, SA320CN at Amazon.com. Read honest and unbiased product reviews from our users.

    Stay safe with this First Alert smoke and fire alarm. It uses ionization and photoelectric sensors to detect different types of fires, and its smart sensor can distinguish between real fires and false alarms to keep nuisance alerts to a minimum. First Alert SA320CN-2 Smoke Alarm: has BOTH sensor types, photoelectric and ionization! a dual sensor alarm, a good price, test button, easy to install and mount, should be easy to replace the AA batteries when the need arises without removing the alarm from the mounting bracket. and decided to purchase more from Walmart to replace the

    SA320CN Dual Sensor Battery-Powered Smoke and Fire Alarm. Because the First Alert SA320CN uses two sensing technologies, it can detect smoldering fires as well as fire with flames. It uses AA batteries, which are more common to have on hand, which is another nice feature. Consumer Reports has honest ratings and reviews on smoke and carbon monoxide detectors from the unbiased experts you can trust. Top smoke detectors use dual sensors, can be interconnected, and

    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. Consumer Reports has honest ratings and reviews on smoke and carbon monoxide detectors from the unbiased experts you can trust. Top smoke detectors use dual sensors, can be interconnected, and

    The First Alert BRK 3120B smoke alarm is manufactured with dual-sensor capabilities, including a photoelectric sensor and an ionization sensor. Photoelectric sensors are better at detecting the presence of smoke coming from slow-burning, smoldering fires. … 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.

    First Alert SA3210 Dual Sensor Smoke and Fire Alarm with 10-Year Sealed Battery uses both a photoelectric sensor as well as an ionization sensor to detect smoke. Also … First Alert Battery Operated Dual Sensor Photoelectric and Ionization Smoke Detector Alarm $ 19 88 /box $ 19 88 /box Alarm Sensor BRK 120-Volt Hardwire Smoke Alarm with Battery Backup Dual Photoelectric and Ionization $ 26 93 $ 26 93. Alarm Sensor Type Dual-Sensor. Pack Size 1. Power Source Hardwired. Battery Back-Up .

    The First Alert BRK 3120B smoke alarm is manufactured with dual-sensor capabilities, including a photoelectric sensor and an ionization sensor. Photoelectric sensors are better at detecting the presence of smoke coming from slow-burning, smoldering fires. … The First Alert SA320CN is a Battery operated Photoelectric and Ionization dual smoke sensor alarm. You get the best of both worlds. The protection from the Fast flaming fires with the Ionization technology and the Slow burning smoldering fire protection with the Photoelectric.