Model # 21008051

Internet #100051755

Store SKU #182262

Store SO SKU #198092

Kidde Battery Operated Ionization Smoke Alarm
0025417009149

Kidde

Battery Operated Ionization Smoke Alarm

  • Battery-operated Smoke detector (batteries included)
  • UL # I9040
  • Ionization sensor
$4.98 / each
If you buy 6 or more
$4.68 / each
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Product Overview

Homedepot Image
  • Battery-operated Smoke detector (batteries included)
  • UL # I9040
  • Ionization sensor
The Kidde i9040 Battery-Operated Ionization Smoke Alarm is a single-station alarm with an early warning signal. This alarm utilizes ionization sensing technology to activate in the event of a smoke or fire incident and its compact, 4 in. design lends it a discreet profile in your home or business. Powered by a 9-Volt battery, this smoke alarm will protect you, your family and home during a power outage. When the battery begins to lose power, a low-battery alert will begin to chirp to notify you it is time to replace.
  • Utilizes ionization sensor
  • Provides an early warning signal in the event of a smoke
  • Compact 4 in. Design
  • Low-battery indicator chirps to alert you to change the battery
  • Test button tests the unit's electronic circuitry, horn and battery function
  • Battery power means protection during power outages
  • 9-Volt battery included use Kidde power supply (205976052)
  • 9 Volt Zinc battery included
  • Compatible with Kidde, FireX, Code One, and Sentinel products
  • UL/CSFM Ref. Kidde Part I9040
  • Click here for more information on Electronic Recycling Programs

Product Overview

  • Battery-operated Smoke detector (batteries included)
  • UL # I9040
  • Ionization sensor
Model #: 21008051
Sku #: 182262
Internet #: 100051755

The Kidde i9040 Battery-Operated Ionization Smoke Alarm is a single-station alarm with an early warning signal. This alarm utilizes ionization sensing technology to activate in the event of a smoke or fire incident and its compact, 4 in. design lends it a discreet profile in your home or business. Powered by a 9-Volt battery, this smoke alarm will protect you, your family and home during a power outage. When the battery begins to lose power, a low-battery alert will begin to chirp to notify you it is time to replace.

  • Utilizes ionization sensor
  • Provides an early warning signal in the event of a smoke
  • Compact 4 in. Design
  • Low-battery indicator chirps to alert you to change the battery
  • Test button tests the unit's electronic circuitry, horn and battery function
  • Battery power means protection during power outages
  • 9-Volt battery included use Kidde power supply (205976052)
  • 9 Volt Zinc battery included
  • Compatible with Kidde, FireX, Code One, and Sentinel products
  • UL/CSFM Ref. Kidde Part I9040
  • Click here for more information on Electronic Recycling Programs

Info & Guides

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Price
$4.98 /each
$5.98 /each
$7.94 /each
$10.36 /each
Name Battery Operated Ionization Smoke Alarm Battery Operated Ionization Smoke Alarm Battery Operated Ionization Smoke Alarm with Test Button Battery Operated Ionization Smoke Detector i9050
Brand Kidde Kidde Kidde Kidde
Ratings (292) (86) (50) (0)
Power Source Battery Battery Battery Battery
Alarm Sensor Type Ionization Ionization Ionization Ionization
Alarm/Detector Features Hush Feature Hush Feature Hush Feature Hush Feature
View Product View Product View Product View Product

Specifications

Dimensions

Product Depth (in.)
4
Product Height (in.)
1.5
Product Width (in.)
4.0625

Details

Alarm Sensor Type
Ionization
Alarm Type
Smoke
Alarm/Detector Features
Hush Feature
Commercial / Residential
Commercial / Residential
Connector/Contact Type
None
Included
Batteries
Pack Size
1
Power Source
Battery
Returnable
90-Day
Voltage (volts)
9

Warranty / Certifications

Certifications and Listings
1-UL Listed

Specifications

Dimensions

Product Depth (in.)
4
Product Height (in.)
1.5
Product Width (in.)
4.0625

Details

Alarm Sensor Type
Ionization
Alarm Type
Smoke
Alarm/Detector Features
Hush Feature
Commercial / Residential
Commercial / Residential
Connector/Contact Type
None
Included
Batteries
Pack Size
1
Power Source
Battery
Returnable
90-Day
Voltage (volts)
9

Warranty / Certifications

Certifications and Listings
1-UL Listed

Questions & Answers

Are there a lot of false alarms for the explosive gas component of model KN-COEG-3?

Asked by: SuzyQ
My experience after 2 months of use is NO false alarms....I have located it in a small furnace room that contains both a natural gas furnace and natural gas water heater. As for placing it in the furnace room when the instructions say not to place in furnace rooms--It was my only common sense option in the raised ranch home.-----In any event if i had a gas leak and had placed the detector in an upstairs location or down stairs bedroom far from the furnace and incoming gas lines It may be tooooo late as the gas would never reach the detector in time.... Am I missing something by placing It in the furnace room for earliest possible detection of a gas leak? Agan,I have had NO false alarms and like the units, but you must take time and educate yourself thru the instructions.
Answered by: ROCK
Date published: 2017-05-27

propane

I have propane heat in a room in my garage. I never knew that you had to have a combination detector to have it to detect a propane leak. This unit does detect propane leaks? Just want to be sure before in purchase.
Asked by: Randy
yes
Answered by: Bigruss
Date published: 2017-02-07

Is this a smoke alarm and Carbon Monoxide detector?

Is this a smoke alarm and Carbon Monoxide detector? looking for the least expensive Carbon Monoxide detector, need 20 for my apartments
Asked by: Jackie
No, have to get separate co detector. Our city code requires them to be in different places anyway.
Answered by: Longbeachkenny
Date published: 2015-11-11

what is the life in years of the detector?

Asked by: oooo
10 years
Answered by: raj22
Date published: 2017-07-03
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Customer Reviews

Battery Operated Ionization Smoke Alarm is rated 4.3 out of 5 by 292.
Rated 3 out of 5 by from It's certainly a low-budget smoke detector and feels every bit as much (including the flimsy way ... It's certainly a low-budget smoke detector and feels every bit as much (including the flimsy way it clicks to its mounting plate). The real detractor for me was that it's too small to use as a replacement for normal-sized smoke detectors (the traditional First Alert detectors). Unlike what's shown in some of the pictures, the mounting plate is the same diameter as the rest of the unit. That means the screw holes are too close together to use the existing holes - if you use one of the existing holes in your ceiling, the other hole will be exposed on the outside of the mounting plate.
Date published: 2016-12-27
Rated 5 out of 5 by from It could save your life! I purchased these on an impulse buy. I was walking down the water heater isle and saw these at such a great price. I figure I should pick up a few and install them throughout the house. I install them that weekend and forget about them. A few months later, I'm in my bedroom and I hear a loud beeping coming from downstairs. I go to investigate and find my living room full of smoke. The smoke was caused by frayed wires on a home entertainment system. If it wasn't for this alarm, the smoke would go unnoticed leading to an actual fire. At this price, I would say to buy one for your friends and relatives as well. There aren't many gifts that you can give that can save someones life.
Date published: 2013-04-10
Rated 1 out of 5 by from The alarm stopped working correctly after two weeks. The device gives a low battery signal after ... The alarm stopped working correctly after two weeks. The device gives a low battery signal after a new battery is installed. After three attempts with new batteries I removed the unit. We purchased this unit to replace another alarm (same model) with the same problem. Will not buy this device again.
Date published: 2017-10-03
Rated 1 out of 5 by from I thought I could smell gas. This thing was... I thought I could smell gas. This thing was silent. Gas smell was unbearable, this was silent. Plumber found gas leak. This thing went back. Something like this should not be defective! The light was on and the monitor read 0 through the whole thing.
Date published: 2017-11-02
Rated 1 out of 5 by from Seemed easy to set up and use initially. However, with a noticeable odor of natural gas in a laun... Seemed easy to set up and use initially. However, with a noticeable odor of natural gas in a laundry room the detector failed to alarm. To test it out I held it over an unlit gas stove burner and it still didn't alarm.
Date published: 2017-08-01
Rated 1 out of 5 by from NO, I had to returned this item because there was... NO, I had to returned this item because there was a problem with it. I had to call the fire department twice thinking that there was carbon monoxide in the house. Turns out it was just a faulty device.
Date published: 2017-11-01
Rated 5 out of 5 by from we finally had to replace our carbon monoxide detector. I... we finally had to replace our carbon monoxide detector. I like the new model that we got. our smoke alarms also needed replacing. the were the originals ones from when we bought the house back in 1996.
Date published: 2017-07-19
Rated 5 out of 5 by from only had this item for 10 days or so - it was easy to install, i.e., plug in. Remains to be see... only had this item for 10 days or so - it was easy to install, i.e., plug in. Remains to be seen if it does what it is supposed to do in case of any gas leak. Other than that, item seems to work ok.
Date published: 2017-08-01
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