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Internet # 100655553

Model # 21005927

Firex Smoke Detector, Hardwired with 9-Volt Battery Backup, Smoke Alarm, 6-Pack

Includes 6 units ($14.17 /unit)
$84.99 /case
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  • Smoke alarm operates on a 120V wired powered source
  • 9-Volt alkaline battery provides protection during power outages
  • Interconnection capability, so when 1 alarm sounds, they all do
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Product Details

About This Product

Protect your family with the Kidde Firex Smoke Detector, Hardwired with Battery Backup, Smoke Alarm. The hardwired, ionization Kidde Firex Smoke Detector, Hardwired with Battery Backup, Smoke Alarm operates on a 120-Volt power source with a 9-volt alkaline battery backup. Using ionization sensor technology, the Kidde Firex Smoke Detector alerts to invisible fire particles, even during power outages. The Kidde Firex Smoke Detector, Hardwired with Battery Backup has green, constant LED light that indicates AC power is connected. Red LED blinking lights flash for standby, if the alarm senses combustion, fire, or smoke, alarm memory if the alarm is activated, and hush mode. UL Certified with a 10-year limited warranty. Meets requirements of UL217, NFPA72, The State of California Fire Marshall, NFPA 101, FHA, & HUD.

Highlights

  • Shop all Kidde fire safety products here
  • Compatible with Kidde, FireX, code one and sentinel products
  • Hardwired 120-volt power source with a 9-volt battery back-up
  • Test/reset button - tests the smoke alarm circuitry & resets memory after an alarm has sounded
  • No low battery chirps; internal timer alerts you to replace the entire unit after 10 years
  • 85 decibel fire alarm alerts of fire
  • Ionization sensor - detects invisible fire particles (associated with fast flaming fires) sooner than photoelectric sensing alarms
  • Constant green LED light indicates that AC power is connected
  • Red LED blinking lights indicate when: alarm is in standby mode, smoke or fire initiated the alarm, or is in hush mode
  • Replacement Chirp - alerts to replace alarm after 10 years of operation
  • Ensure whole home family protection by placing 1 fire detector and carbon monoxide detector on each level of your home, in your bedroom, & other locations where required by law
  • Industry experts (such as the NFPA), recommend that both ionization and photoelectric smoke alarms be installed to help ensure maximum detection of the various types of fires that can occur within the home.
  • Kidde offers a full range of 120-Volt AC wire-in life safety products with interconnect capability to provide the most immediate and complete system available, when any one interconnected alarm is triggered, all interconnected alarms within the home sound an immediate warning
  • Smoke detectors utilize an ionization sensor to detect fire hazards and sound an 85 db alarm when a hazard is detected
  • *Check with your state and local fire and Building/Safety codes for specific information regarding smoke & Carbon Monoxide Alarms.
  • UL/CSFM Ref. Kidde Part i12060
  • Shop all Kidde Smoke Detectors
  • Learn how to install a smoke alarm
  • Properly prepare your home for a fire emergency
  • Protect your home and family from fire damage using these preventative tips
  • Shop Smoke Detectors with our buying guide!
  • Click here for more information on Electronic Recycling Programs
  • Return Policy

Product Information

Internet # 100655553

Model # 21005927

Specifications

Dimensions: H 5.6 in, W 5.6 in, D 1.75 in

Dimensions

Product Depth (in.)1.75 inProduct Height (in.)5.6 in
Product Width (in.)5.6 in

Details

Alarm Sensor TypeIonizationAlarm/Detector FeaturesBattery Back-Up, Hush Button, Light Indicator
Alert TypeSirenCommercial/ResidentialHome
Connector/Contact Type2-WireFixed or portablePortable
IncludedBatteriesPack Size6
Power SourceHardwiredReturnable90-Day
Voltage (V)120

Warranty / Certifications

Certifications and ListingsUL Listed

Questions & Answers

165Questions
caret
Q:Does this item come with adapters
by|Feb 29, 2024
0 Answer
Answer This Question
caret
Q:Do you have to turn off electricity to install this unit.
by|Feb 23, 2024
1 Answer
Answer This Question

A:  Hello. Yes, you have to turn off the AC power to wire in the wiring harness plug and install the unit.

by|Feb 26, 2024
    caret
    Q:How many. Sq feet do they cover with a 12 ft. Ceiling
    by|Feb 1, 2024
    1 Answer
    Answer This Question

    A:  Hello. The unit doesn't cover square footage. This is a residential smoke alarm and it covers certain locations. When smoke pools on the ceiling down to the level of the alarm and flows into the edge of the alarm and fills up the inside of the smoke chamber, the alarm will go off. See owner's manual for locations to avoid and locations to install in a home.

    by|Feb 2, 2024
      caret
      Q:I have a FireX FADC 4618 Series. I need to replace them. What Adaptor should I get to connect the old with the new?
      by|Jan 21, 2024
      1 Answer
      Answer This Question

      A:  Hello. There is no direct replacement for your alarms. That being said, you can use any of our current alarms to replace your older alarms. You will have to take down all of the older alarms before putting up any new alarms. You will have to change out the mounting brackets at each location but that will just take a screwdriver to change out. You will either have to change out and rewire the wiring harness plugs at each location or you can choose to use the KA-F2 adaptors to adapt the old plugs to our new alarms. The adaptors would plug into the old plugs and the new alarms would plug into the adaptors. The model for the adaptor pack is the 21028461 which includes the KA-F2 and the KA-B2 for some of the older BRK/First Alert plugs.

      by|Jan 23, 2024
        Showing 1-4 of 165

        Customer Reviews

        4.7 out of 5
        • 4.7 out of 1,461 reviews
        • 90% recommend this product
        Filter by:
        Showing 1-10 of 1,461 reviews
        Easy installation and all 6 working properly
        These replaced 10 yo kidde firex smoke detectors. Base plates did not match but easily changed out because 2 screws in ceiling electrical box spaced the same for both base plates. Just loosened screws and changed out base plates. Connecting plugs from old detectors matched new ones so didn’t need new plugs. Came with batteries installed but I put in new alkaline 9 volt batteries.
        by
          • Recommended
          Please read before installing...
          As sold, I found it nearly impossible to secure the smoke detector to the base plate. You are supposed to push it on and twist to lock it. If you aren't paying close attention you will think you have it locked on. It will appear fairly secure, but it isn't locked in. What you need to do is remove the rubber gasket on the back of the smoke detector. I point to it with a red arrow in the attached photo. You can pull it out, but you might want to use a razor to prevent some of the paper label from ripping as you remove it. One you remove the rubber gasket, you will be able to twist the detector into the base properly. The gasket is totally unnecessary, it is a very tight fit without it. I hope this helps some people.
          by
          Response from Kidde ExpertJun 16, 2023
          Hello. It is meant to be a tight fit but easily possible if you push firmly as you rotate. If you have issues again, please call us instead at 1-800-880-6788 with pictures of what you are talking about. We can resolve such issues and we strongly recommend not modifying our alarms.
            • Recommended
            2 found this review helpful
            Simplest replacement of any home repair items I have. The alarm connection plug fit perfectly wit...
            Simplest replacement of any home repair items I have. The alarm connection plug fit perfectly with my existing wired smoke alarm system. I really like the model I selected with backup battery access on the front side of the alarm so I don't have to remove the alarm from the ceiling and unplugging it to replace the battery. Simple and fast online ordering.
            by
            • Verified Purchase
            • Recommended
            2 found this review helpful
            Easy to install play covers old smoke alarm hole
            Easy to install play covers old smoke alarm hole
            by
            • Verified Purchase
            • Recommended
            1 found this review helpful
            My Kidde Fire X Smoke Detector was easy to install. I really liked the easy access to the battery...
            My Kidde Fire X Smoke Detector was easy to install. I really liked the easy access to the battery with the front load battery access. It has all of the features you look for in a fire alarm. I would highly recommend this product.
            by
            • Verified Purchase
            • Recommended
            The installation was an ease. The hard wire option is the best and simple instructions to unders...
            The installation was an ease. The hard wire option is the best and simple instructions to understand. It took about 5 mins per unit.
            by
            • Verified Purchase
            • Recommended
            I have had these for a little over a year, maybe 16 months. They were easily to install. The batt...
            I have had these for a little over a year, maybe 16 months. They were easily to install. The battery is not hard to change (yes, despite being hardwired, I have had to change the battery in them). They do alert you, and they are loud. They will wake you up at 3am. They will also alert the neighbors (they text me to tell me my house was beeping). Unfortunately, they alert me when it rains, not when there is smoke. I can't leave my garage door open or they will go off.
            by
            Response from Kidde ExpertOct 29, 2019
            Hello WakesMeUpAt3AM,
            Typically, Nuisance alarms, particularly in the middle of the night, are caused by something interfering with the sensor. These units are looking for particles of combustion, so when a small insect or piece of dust gets into the sensor (*located inside of the unit) the unit will interpret this as smoke particles. We recommend using compressed air, through the side vents/ bug screen and blowing out/cleaning the alarm really well. If you continue to have issues, please call product support. 800 880 6788
              7 found this review helpful
              Eazy install Easy battery change
              Eazy install Easy battery change
              by
              • Verified Purchase
              • Recommended
              This multi-pack represents a good price for a proven product. However, I was very disappointed w...
              This multi-pack represents a good price for a proven product. However, I was very disappointed when I opened the package because: - Yellow labels are attached to the battery doors with full strength adhesive. It takes five minutes per unit to remove all of the residual glue. - The included batteries are zinc-carbon rather than alkaline, and contain lead (meaning they should not be placed in regular trash). Since most consumers probably don't recognize the tiny warnings, the batteries create an environmental hazard. The good news is that I can just plug in these new units to the existing bases.
              by
                1 found this review helpful
                Our 11 year old fire detectors were not interchangeable with the new FireX detectors, but it only...
                Our 11 year old fire detectors were not interchangeable with the new FireX detectors, but it only took a couple minutes to rewire using the new wiring harness included with the new set. We installed 10 units in about an hour and a half. The units have a great top-loading battery compartment and the check and quiet buttons are also right on top. Having a wide mounting collar against the ceiling eliminated any need for touch-up painting from the old ring. Its ionization sensor feature is a big comfort.
                by
                • Verified Purchase
                • Recommended
                2 found this review helpful
                Showing 1-10 of 1,461 reviews