Code One 10-Year Lithium Ion Battery Operated Smoke Alarm (3-Pack)-21009993 - The Home Depot

Code One

Model # 21009993

Internet # 203728681

Store SKU # 153150

10-Year Lithium Ion Battery Operated Smoke Alarm (3-Pack)

Code One 10-Year Lithium Ion Battery Operated Smoke Alarm (3-Pack)

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

$49.97 / each


Model # 21009993

Internet # 203728681

Store SKU # 153150

Store SO SKU # 198092

3 pack of Code One brand 10 year sealed battery smoke alarm. These alarms feature 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 these 10 year, smoke alarms 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
  • These alarms utilize 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
  • Alarms are UL listed and equipped with a piezoelectric horn that is rated at 85 decibels at 10 ft.

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Assembled Depth (in.)  1.55 in  Assembled Height (in.)  5.6 in 
Assembled Width (in.)  5.6 in 
Alarm Sensor Type  Ionization  Alarm Type  Smoke 
Alarm/Detector Features  10-Year Battery,Hush Feature,Value Pack  Commercial / Residential  Residential 
Connector/Contact Type  None  Hazardous Code  No Air 
Included  Batteries  Power Source  Battery 
Returnable  90-Day  Voltage (volts) 
Warranty / Certifications
Certifications and Listings  1-UL Listed 


Rated 4.7 out of 5 by 20 reviewers.
Rated 5 out of 5 by Great Installed easy, lasts ten years, what more could you want? April 24, 2014
Rated 4 out of 5 by no batteries to replace Great for rental property. Tenants always seem to 'forget' to replace batteries in other units with replaceable batteries. September 23, 2014
Rated 5 out of 5 by EASY TO INSTALL I just installed these smoke alarms and it was a very easy process. The were relatively inexpensive and are supposed to last for 10 years. December 19, 2014
Rated 5 out of 5 by Solved a major problem These smoke alarms solved a major problem. Mine were hard-wired and kept going off for no reason. These are 10-year batteries which is a great thing. June 10, 2014
Rated 5 out of 5 by So Happy to Find This Product As the hard wired smoke detectors with battery backups in my home began to go off in the middle of the night despite changing all of the batteries (who designed a night sensor in those things to wake you up at 2:00am?), I was thrilled to find these to replace them and with a 10 year battery, I'm expecting some good nights of sleep before needing to replace these smoke detectors! November 12, 2014
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