Code One 10-Year Lithium Ion Battery Operated Ionization Smoke Alarm-21009992 at The Home Depot
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Code One

Model # 21009992

Internet # 203728679

Store SKU # 152622

10-Year Lithium Ion Battery Operated Ionization Smoke Alarm

Code One 10-Year Lithium Ion Battery Operated Ionization Smoke Alarm

This item has been discontinued.
The Home Depot no longer carries this specific product.

$19.97 / each
Item cannot be shipped to the following state(s): AK,GU,HI,PR,VI


Model # 21009992

Internet # 203728679

Store SKU # 152622

Store SO SKU # 198092

The Code One 10 year sealed battery smoke alarm has an innovative design unlike any other smoke alarm. When attached to mounting bracket, the alarm will automatically activate. No switches, no pull-tabs, everything is automatic. This unique feature makes installing this 10 year, smoke alarm in your home, office, or business easy. In addition to the easy installation you also have the benefit of a sealed in lithium power supply, no battery replacement required over the 10-year life of the alarm. With this alarm installed in your home, office or business, you are providing an early warning in the event of a fire that can save lives.

  • Code one 10 year smoke alarm features smart hush control allowing you to temporarily silence nuisance alarms and an end of life alert indicating it is time to replace the alarm
  • This alarm utilizes ionization sensing technology, ionization sensing alarms may detect invisible fire particles (associated with flaming fires) sooner than photoelectric alarms
  • Features a test/reset button that tests units circuit operation and resets memory after an alarm condition occurs
  • Alarm is UL listed and equipped with a piezoelectric horn that is rated at 85 decibels at 10 ft.

Info & Guides

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Alarm Sensor Type  Ionization  Alarm Type  Smoke 
Alarm/Detector Features  10-Year Battery,Hush Feature  Assembled Depth (in.)  1.55 in 
Assembled Height (in.)  5.6 in  Assembled Width (in.)  5.6 in 
Certifications and Listings  1-UL Listed  Commercial / Residential  Commercial / Residential 
Connector/Contact Type  None  Included  Batteries 
Returnable  90-Day  Voltage (volts) 


Rated 4.4 out of 5 by 24 reviewers.
Rated 5 out of 5 by install it and your done for 10 yrs as an apartment manager, it is essential that smoke detectors always work. tenants do not always replace the battery. that's where this product comes in and solves multiple problems. with a 10 year battery life, self-contained it never needs service. fire inspectors passed this product at installs in minutes and activates at once and completes a self-test and your done. I have 25 of these installed and have never had any problems or issues...I would recommend this product to everyone. dave June 4, 2013
Rated 1 out of 5 by This product is Junk I bought this 6 months ago. Last night it started to alarm. There was no smoke or fire. It continues to smoke. I was hoping to get a product I didn't have to worry about for 10 years or so. Instead I wasted 20 bucks on an alarm that lasted less than 6 months. Never again. Made in China. Don't buy this product. July 21, 2014
Rated 4 out of 5 by This product is easy to install and can be safe for up to 10 years. This device will save on changing batteries for up to 10 years. Now we will not have to worry if we forgot about the time of year. May 13, 2014
Rated 1 out of 5 by fair warning Just after 3 and a half months of operation my unit had a nuisance alarm that would not clear, hush button failed to work as well. Put on some earplugs and tried to clean the unit as that might have been the problem but that failed to help. 6 hours later I deactivated the unit (which ends it's life, but this is clearly understood) and tossed it into my hazmat pile- 20 bucks down the drain and I'm back to the trusty 9 volt units! April 15, 2014
Rated 4 out of 5 by Easy to install I ordered it online because they don't carry two (2) wire detectors in the store. Guess what? It came with three (3) wires and instructions to only connect two (2). The date of manufacture was 2012. After a few days it started beeping. I think the battery that came with it was put in the box at manufacture. I'm hoping that a new battery is all it needs. Other than that I'm fine. August 27, 2014
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