SITERWELL Smoke Detector,Photoelectric Sensor, Fire Alarm,Low Battery,Fault Warning for House and Bedroom, 4 Packs
SITERWELL Smoke Detector,Photoelectric Sensor, Fire Alarm,Low Battery,Fault Warning for House and Bedroom, 4 Packs
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SITERWELL

SITERWELL Smoke Detector,Photoelectric Sensor, Fire Alarm,Low Battery,Fault Warning for House and Bedroom, 4 Packs

SITERWELL Smoke Detector,Photoelectric Sensor, Fire Alarm,Low Battery,Fault Warning for House and Bedroom, 4 PacksSITERWELL Smoke Detector Smoke Detector 10 Year Battery Photoelectric Sensor Fire Alarm Low Battery Fault Warning House Bedroom UL217 9th Listed GS52SITERWELL Smoke Detector 10 Year Battery Photoelectric Sensor Fire Alarm Low Battery Fault Warning House Bedroom UL217 9th Listed GS525A 12 PacksSITERWELL Smoke Detector Smoke Detector 10 Year Battery Photoelectric Sensor Fire Alarm Low Battery Fault Warning House Bedroom UL217 9th Listed GS52SITERWELL Smoke Detector Smoke Detector 10 Year Battery Photoelectric Sensor Fire Alarm Low Battery Fault Warning House Bedroom UL217 9th Listed GS52SITERWELL Smoke Detector 10 Year Battery Photoelectric Sensor Fire Alarm Low Battery Fault Warning House Bedroom UL217 9th Listed GS525A 6 PacksSITERWELL Smoke Detector Smoke Detector 10 Year Battery Photoelectric Sensor Fire Alarm Low Battery Fault Warning House Bedroom UL217 9th Listed GS52SITERWELL Smoke Detector Smoke Detector 10 Year Battery Photoelectric Sensor Fire Alarm Low Battery Fault Warning House Bedroom UL217 9th Listed GS52SITERWELL Smoke Detector Smoke Detector 10 Year Battery Photoelectric Sensor Fire Alarm Low Battery Fault Warning House Bedroom UL217 9th Listed GS52
Count Per Pack:4

Key item features

  • Initial Activation: Requires activation by pulling the battery tab before installation to ensure proper operation and response to fire hazards.
  • Extended Battery: Features a built-in 3V lithium battery designed for a 10-year lifespan, with a low battery warning and a fault signal indicating product replacement is needed.
  • Certified Photoelectric: UL217-9th listed photoelectric sensor technology, highly sensitive to slow smoldering fires that produce light smoke and minimal heat.
  • Convenient Testing: Includes a test/mute button for weekly operational checks, designed to be silent during normal use to avoid disturbing rest.
  • Flexible Mounting: Comes with magnets and screws, offering versatile installation options for mounting on walls or ceilings.
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Current price is $79.99
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4.660341555977229 stars out of 5, based on 527 seller reviews(4.7)
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About this item

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Customer ratings & reviews

4.4 out of 5 stars
stars192 ratings34 reviews
How item rating is calculated
  1. 5 stars73% (141)
  2. 4 stars13% (24)
  3. 3 stars3% (5)
  4. 2 stars3% (5)
  5. 1 star9% (17)

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Showing 1-3 of 34 reviews

Apr 25, 2026
Shannon
Top Reviewer
Item details
Count per pack: 1
Sold bySITERWELL ELECTRONICSDelivered byWalmart
5 out of 5 stars review

Verified Purchase

So easy to install

Really appreciate a long term battery ( not swapping out battery once a year) and the optional magnet installation is perfect for someone like my mother! Box included everything and very detailed instructions. Unit also is clearly marked on the outside the expiration date.

Helpful?4BEICOEU614Y13677009796
Feb 18, 2026
Jeffrey
Top Reviewer
Item details
Count per pack: 4
Sold bySITERWELL ELECTRONICSDelivered byWalmart
5 out of 5 stars review

Verified Purchase

i just installed these items so it's premature to rate their quality, battery life etc. They do install easy and don't dominate a large wall space. If I'm still around in ten years, I'll let you know about the 10 year batterues and the quality and durability of the product.

Helpful?4BEICOEU614Y13677009796
Nov 3, 2025
Jay
Item details
Count per pack: 6
Sold bySITERWELL ELECTRONICSDelivered byWalmart
5 out of 5 stars review

Verified Purchase

Easy to install, works as expected

Really like the mounting accessory that combines double-sticky foam and neodium magnets. this makes it super easy to install, and also to take it down in the future to inspect. no more alignment of tabs and slots and then twisting. just let the Magnets do the work. Otherwise, it's just a normal 10-year battery smoke detector. about 3.5 inches in diameter and off-white color. big button for testing. Loud buzzer when tested.

Helpful?4BEICOEU614Y13677009796