FireX 120 Volt Hardwired interconnectable Dual Photoelectric/Ionization Sensor Smoke Alarm with Battery Backup-21007915 at The Home Depot
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Model # 21007915

Internet # 203251147

Store SKU # 376524

120 Volt Hardwired interconnectable Dual Photoelectric/Ionization Sensor Smoke Alarm with Battery Backup

FireX 120 Volt Hardwired interconnectable Dual Photoelectric/Ionization Sensor Smoke Alarm with Battery Backup

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

$32.97 / each
Item cannot be shipped to the following state(s): GU,VI


Model # 21007915

Internet # 203251147

Store SKU # 376524

Kidde AC DC Photo Ion Smoke Alarm functions as a standalone unit or in an interconnected system. Alarm features HUSH, allowing you to quickly silence nuisance alarms and also includes a tamper resist feature that deters tampering and theft. Alarm combines both photoelectric and ionization sensor technology.

  • Battery back-up feature provides protection during power outages and equipped with a low battery warning chirp
  • Test/Reset button allows testing of the alarms circuitry and horn
  • Temperature operating range is between 40 degree Fahrenheit and 100 degree Fahrenheit with humidity operating range up to 85% relative humidity
  • Unit is equipped with a piezoelectric horn that is rated at 85 decibels at 10 ft.

Info & Guides

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Alarm Sensor Type  Dual-Sensor  Alarm Type  Smoke 
Alarm/Detector Features  Battery Back-Up,Hush Feature,Interconnected  Assembled Depth (in.)  1.8 in 
Assembled Height (in.)  5.75 in  Assembled Width (in.)  5.75 in 
Certifications and Listings  1-UL Listed  Commercial / Residential  Commercial / Residential 
Connector/Contact Type  2-Wire  Included  Batteries 
Returnable  90-Day  Voltage (volts)  120 


Rated 4.5 out of 5 by 32 reviewers.
Rated 5 out of 5 by Great product for replacing contractor/builder 10 yr old plus detectors easy to install and just what I wanted to replace 10yr old plus detectors that were only ionization only. This detector porovides ionization, photoelectric sensors plus battery back up. June 10, 2014
Rated 5 out of 5 by Easy to install The fire alarm was very easy to install in a new bedroom addition. Pressing the test feature worked the first time. Being interconnected, all fire alarms sounded which was quite loud(as it should be). But for testing purposes, you may want to wear ear protection. September 16, 2014
Rated 3 out of 5 by great features, questionable life I've been putting these in my rentals over the years as appreciate the feature set to protect my tenants. That being said, these appear to be designed to have a 5yr lifespan, plus or minus a year, and they start to consistently fail. I would normally have no issue with this if it was a reasonable limit on detector, but clearly it is not (I'd expect 10-15yrs). Once you understand this, can figure out for yourself what the real value is. The feature set is excellent, the lifespan not so much. October 4, 2014
Rated 5 out of 5 by Smoke alarm Easy to install, looks fairly nice on ceiling. Has never gone off, so I'm not sure of the sensitivity. Hope it works!! October 18, 2014
Rated 4 out of 5 by So far so good Replace a whole house of builder grade smoke detectors that were almost 10 years old. These went in easily except for 1 (out of 8). For this one the wiring clip didn't fit very well in the back of the smoke detector. Finally got the clip in by using a large amount of force. I was worried I might break the detector but it seems to be working fine. So far no false alarms. September 16, 2014
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