Kidde Fire Sentry Micro Profile 3 Year Smoke Alarm, 9 Volt Battery
Kidde Fire Sentry Micro Profile 3 Year Smoke Alarm, 9 Volt Battery
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Kidde Fire Sentry Micro Profile 3 Year Smoke Alarm, 9 Volt Battery

4.5 stars out of 1596 reviews
(4.5)|
1,596 ratings

Key item features

  • Compact Design: At only 4-inches in diameter, this smoke alarm is suitable for installation in tight spaces within homes, RVs, and mobile homes.
  • Ionization Detection: Utilizes ionization sensor technology to detect invisible fire particles associated with flaming fires sooner than photoelectric alarms.
  • Battery Powered: Operates on a 9-volt alkaline battery, providing reliable detection of smoke or fire even during power outages and allowing for easy, wire-free installation.
  • Audible Alert: When smoke or fire is detected, an 85-decibel alarm will sound, accompanied by a red LED indicator.
  • Convenient Features: Includes a test-hush button for battery operation checks and silencing nuisance alarms from cooking or shower steam, with a chirp indicating low battery.
  • Safety Standards: Meets the requirements of UL 217, NFPA72 (chapter 11 2002 edition), NFPA101 (One and two-family dwellings), and Federal Housing Authority (FHA).
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Current price is $9.99
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Customer ratings & reviews

4.5 out of 5 stars
stars1,596 ratings592 reviews
How item rating is calculated

Reviews summary

Pros
  • : Offers a low-cost option.
  • : Compact design and simple mounting system make it quick.
  • : Has a small, low profile.
  • : Offers protection without breaking the bank.
Neutral
  • : Can be easy to hang, but hole may be too small.
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Showing 1-3 of 592 reviews

Nov 26, 2025
Fidgety
Item details
Count per pack: 1
5 out of 5 stars review

Verified Purchase

Simple old school detector at a great price.

Simple old school detector at a great price. I got two more for other areas of the house. There's no fiddling with apps or settings, no wifi required. A couple screws to install the mounting bracket, add the included battery and twist into place = DONE.

Helpful?20AP8RHJACU925488877
reply from Kidde Expert

Thank you for sharing your feedback! We love seeing that our products work great for you!

Jan 29, 2026
ray
Item details
Count per pack: 2
5 out of 5 stars review

Verified Purchase

New smoke detector

It was easy to install and now I can rest in peace and confidence knowing I replaced my old one, it was chirping letting me know it was time to replace.

Helpful?20AP8RHJACU925488877
Dec 31, 2020
larry
5 out of 5 stars review

Verified Purchase

great life savers i do have pictures for warranty

life savers great an loud i ordered 10 of these i have have alarms just decided to get new ones i didnt have one inside hot water/electric furnace closet i put one inside on door we woke up 2am to an alarm in hall smelled a plastic melted or a melting wire my blower relay melted off cntl board- this small but loud detector saved us i took some to daughters put xtra n her house thank u"" Expect the unexpected""ppl buy these of these could save a life "your own"

Helpful?20AP8RHJACU925488877