SITERWELL Smoke Detector, 10 Year Product Life Fire Alarm with Magnetic Fastening Kit, Smoke Alarm with Photoelectric Sensor,Low Battery Warning Function for House, ETL-9th Listed, GS509A, 10 Pack
SITERWELL Smoke Detector, 10 Year Product Life Fire Alarm with Magnetic Fastening Kit, Smoke Alarm with Photoelectric Sensor,Low Battery Warning Function for House, ETL-9th Listed, GS509A, 10 Pack
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SITERWELL

SITERWELL Smoke Detector, 10 Year Product Life Fire Alarm with Magnetic Fastening Kit, Smoke Alarm with Photoelectric Sensor,Low Battery Warning Function for House, ETL-9th Listed, GS509A, 10 Pack

SITERWELL Smoke Detector, 10 Year Product Life Fire Alarm with Magnetic Fastening Kit, Smoke Alarm with Photoelectric Sensor,Low Battery Warning Function for House, ETL-9th Listed, GS509A, 10 PackSITERWELL Smoke Detector 10 Year Product Life Fire Alarm Magnetic Fastening Kit Smoke Alarm Photoelectric Sensor Low Battery Warning Function House ESITERWELL Smoke Detector 9V battery Fire Alarm Magnetic Fastening Kit Smoke Alarm Photoelectric Sensor Low Battery Warning House ETL 9th Listed GS509SITERWELL Smoke Detector 10 Year Product Life Fire Alarm Magnetic Fastening Kit Smoke Alarm Photoelectric Sensor Low Battery Warning Function House ESITERWELL Smoke Detector 10 Year Product Life Fire Alarm Magnetic Fastening Kit Smoke Alarm Photoelectric Sensor Low Battery Warning Function House ESITERWELL Smoke Detector 10 Year Product Life Fire Alarm Magnetic Fastening Kit Smoke Alarm Photoelectric Sensor Low Battery Warning Function House ESITERWELL Smoke Detector 10 Year Product Life Fire Alarm Magnetic Fastening Kit Smoke Alarm Photoelectric Sensor Low Battery Warning Function House ESITERWELL Smoke Detector 10 Year Product Life Fire Alarm Magnetic Fastening Kit Smoke Alarm Photoelectric Sensor Low Battery Warning Function House ESITERWELL Smoke Detector 10 Year Product Life Fire Alarm Magnetic Fastening Kit Smoke Alarm Photoelectric Sensor Low Battery Warning Function House ESITERWELL Smoke Detector 10 Year Product Life Fire Alarm Magnetic Fastening Kit Smoke Alarm Photoelectric Sensor Low Battery Warning Function House E
Count Per Pack:10-Out of stock

Key item features

  • Extended Lifespan: This smoke detector offers a 10-year product life, requiring continuous battery replacement of its 1-year 9V battery, significantly reducing the risk of fatalities in home fires.
  • Photoelectric Detection: Utilizing photoelectric technology, the GS509A is highly sensitive to slow smoldering fires, which produce light smoke and minimal heat before igniting.
  • Audible Warning: A loud 85dB alarm ensures that all occupants can clearly hear the warning, providing crucial time to escape during a fire event.
  • Low Battery Notification: The device includes a humanized design feature that provides a signal alarm when the battery is low, prompting timely replacement.
  • Effortless Installation: Installation is straightforward with a mounting bracket, allowing for easy placement on either walls or ceilings.
  • Certified Compliance: The fire detector is installed in accordance with NFPA standard 72, ensuring reliability and adherence to safety regulations.
  • Multi-Pack Offering: This product is available as a 10-pack, providing multiple units for comprehensive home coverage.
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Customer ratings & reviews

4.4 out of 5 stars
stars543 ratings138 reviews
How item rating is calculated
5.0
5.0
5.0
3.1
  1. 5 stars73% (396)
  2. 4 stars12% (67)
  3. 3 stars4% (20)
  4. 2 stars2% (10)
  5. 1 star9% (50)

Reviews summary

Pros

  • : Straightforward installation process with minimal hassle.
  • : Offers a compact option at a good value.
  • : Features high-end materials and craftsmanship.

Neutral

  • : Can be long-lasting, but may vary in duration.
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Showing 1-3 of 138 reviews

Dec 28, 2025
Lisa
Top Reviewer
Item details
Count per pack: 5
Sold bySITERWELL ELECTRONICSDelivered byWalmart
5 out of 5 stars review

Verified Purchase

new smoke alarms

These smoke alarms are very easy to install. they offer the 3M patches or screws, I chose the patches. The price was good at about $9.00 and they are small and compact. I would but again and recommend to others. The siren is very very very loud which is good should anything happens. Overall good product.

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Helpful?4KZJVAJ42L4115576169586
Jan 6, 2026
Jim
Item details
Count per pack: 10
Sold bySITERWELL ELECTRONICSDelivered byWalmart
5 out of 5 stars review

Verified Purchase

Impressed

The detectors come with their own battery, like most do. They, also, come with two options for affixing to a wall - besides the usual base (for twisting on), there's also magnetic connecters with adhesive on both sides. Will definately purchase these again.

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Helpful?4KZJVAJ42L4115576169586
Nov 21, 2025
Andi
Top Reviewer
Item details
Count per pack: 5
Sold bySITERWELL ELECTRONICSDelivered byWalmart
5 out of 5 stars review

Verified Purchase

Great value and easy to install

These are excellent value! They are easy to install with the magnet adhesive. It was so simple, safe, and saved us a lot of stress. I highly recommend!

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Helpful?4KZJVAJ42L4115576169586