Code One 10-Year Lithium Ion Battery Operated Smoke Alarm (2-Pack)-21010019 - The Home Depot

Code One

Model # 21010019

Internet # 203728683

Store SKU # 154074

10-Year Lithium Ion Battery Operated Smoke Alarm (2-Pack)

Code One 10-Year Lithium Ion Battery Operated Smoke Alarm (2-Pack)

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

$29.88 / each
  • Smart hush control
  • Ionization sensing technology
  • Easy to install


Model # 21010019

Internet # 203728683

Store SKU # 154074

Store SO SKU # 198092

Twin-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 the Code One 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.

Info & Guides

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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,Tamper Resistant,Value Pack  Commercial / Residential  Commercial / Residential 
Connector/Contact Type  None  Included  Batteries 
Power Source  Battery  Returnable  90-Day 
Voltage (volts) 
Warranty / Certifications
Certifications and Listings  1-UL Listed 


Rated 4.5 out of 5 by 74 reviewers.
Rated 5.0 out of 5.0 by Dave Lewis Easy installation. Never have to replace battery is a bonus. February 17, 2015
Rated 5.0 out of 5.0 by Good buy I am glad I bought this double pack whcih is cheaper then the singles. The way it works the batteries are in standby mode until you activate them. Mount the bracket and twist the alarm on and you hear a beep. The battery is then activated. The 10 years then starts. Once mounted and you hear the beep, then they want you to press the TEST button so it beeps again. DO NOT unscrew it from the base. That will deplete the battery. Once mounted let it mounted. To silence press the silenece button do NOT unscrew from bracket. I put a mark on the silence button so it is easy to spot as the test and the silence button look alike, try reading the words when mounted. April 2, 2013
Rated 4.0 out of 5.0 by Great deal A good product that solves the pesky problem of having to change batteries all the the middle of the night. November 11, 2014
Rated 5.0 out of 5.0 by Smoke alarm Easy to install and like the fact no battery changes November 4, 2014
Rated 5.0 out of 5.0 by great value Easy to install , looks good and working great so far . January 14, 2015
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