Picture 1 of 8
Stock photo
Picture 1 of 8
Stock photo
Kidde 21006378 Hardwire Smoke Alarm Detector
K
KPJ Finds (367)
98.7% positive feedback
Price:
US $34.09
ApproximatelyAU $52.42
Returns:
30-day returns. Buyer pays for return postage. If you use an eBay postage label, it will be deducted from your refund amount.
Condition:
- Buy It NowKidde i12040 120V AC Wire-In Smoke Alarm With Battery Backup And Smart Hush
Oops! Looks like we're having trouble connecting to our server.
Refresh your browser window to try again.
About this product
Product Identifiers
BrandKidde
MPN21006378
GTIN0047871403813
UPC0047871403813, 0689830288279
eBay Product ID (ePID)3023283136
Product Key Features
TypeSmoke Alarm
Dimensions
Height1-1/2"
Weight0.5lbs.
Ratings and reviews
Most relevant reviews
- 27 Mar, 2025
Glad I found them!
I came to eBay for these because I could no longer find them locally (being discontinued, maybe?), and I needed two more to replace older models in the house and wanted all the same model detector. Both items arrived within the time expected and in great shape, and are now soundly installed in their respective rooms and working just fine. Thankful for them and for the vendor still carrying them!Verified purchase: YesCondition: New
- 18 Sep, 2018
Kidde smoke alarm review
First of all I think Kidde has a very good reputation second the ones that I replaced were also a Kidde and they were over 17 years old and six of the seven we're still working properly. The new ones that I replace the old ones with have a 10-year lifespan which I think is outstanding and also they were a very very good value and if I get the same performance out of the new ones like the old ones you can't beat that with a stick and it also has a battery backup 9 volt battery change it once a year you're good to go and they also have a test button on them that you can do weekly to make sure they are working properly. Extremely pleased would buy him again would strongly recommend them. PS the best part is that they were plug-and-play unplug the wire from the back of the old one and plug it into the back of the new one nice and simple.Verified purchase: YesCondition: New
- 02 Sep, 2020
Amazing price point
Great replacement This is exactly what I needed. Everyone should buy these smoke detectors. I would of brought more but hopefully in 10 years these are still around at this amazing price.Verified purchase: YesCondition: New
- 31 Mar, 2021
Friendly replace reminer after 10 years.
Smoke alarm and smoke detectors service life is about 10 years. When time is up, most smoke detectors start chirping at around 3am to let you know it's time to replace it. FYI A Smoke Detector is a fire alarm input device with no output by itself. A Smoke Alarm is a stand alone smoke detection and alert in one stand alone unit.Verified purchase: YesCondition: New
- 30 Nov, 2018
real nice smoke dectors. perfect fit and easy to hook up
I just put the smoke alarms in.replacing smoke alarms that was 25yrs old, ther perfect fit and easy to hook up. real good replacement,Verified purchase: YesCondition: New
- 14 Mar, 2018
Kiddie. DC 9V. AC 120V
I smoke detector came with its battery and the plug for 120 volt backup. Very easy install as everything you need get one I did !!!!!Verified purchase: YesCondition: New
- 20 Oct, 2021
great product, great pricing
These are the standard type smoke detector by Kidde, and are great, and the price was great.Verified purchase: YesCondition: New
- 26 Jul, 2025
These brand new detectors allowed me to ...
These brand new detectors allowed me to swap out our 10 year old detectors with no modifications.Verified purchase: YesCondition: New
- 14 Mar, 2018
great smoke alarm
arrived on time, price was right, easy to install . I would recommend this company 5 starsVerified purchase: YesCondition: New
- 14 May, 2019
great replacement for my old one
bought this to replace my 10 year old model , fit right in place of the old oneVerified purchase: YesCondition: New
