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Firex Smoke Detector, Hardwired with nine-V Battery Backup & Front-Load Battery Door, Smoke Alarm, 4-Pack

Includes 4 units ($13.74 /unit)
$54.97 /bundle
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  • Ionization sensing technology detects invisible fire particles
  • Hardwire installation; one nine-V, alkaline battery backup
  • Protection during power outages and no low battery chirps
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Product Details

The Kidde i4618 is an AC/DC powered, ionization smoke alarm that operates on a 120V power source with 9V battery backup. Contractor box contains 4 alarms, mounting brackets, batteries and wire harness all included. This alarm uses ionization sensing technology. Ionization sensing alarms may detect invisible fire particles (associated with flaming fires) sooner than photoelectric alarms. Photoelectric sensing alarms may detect visible particles (associated with smoldering fires) sooner than ionization alarms. The front-loading battery door allows user to change the battery without removing the alarm from the mounting bracket making battery replacement easy and convenient. This smoke alarm is available in a 6-piece cut case with tray for easy display as well as a 6-piece bulk pack for contractors and property owners. This unit is a UL Listed product with a 5-year limited warranty. Kidde strongly recommends that both ionization and photoelectric smoke alarms be installed to help insure maximum detection of the various types of fire that can occur within the home.
  • Shop all Kidde fire safety products here
  • Hardwired 120-V power source with a nine-V battery back-up
  • Test/reset button - tests the smoke alarm circuitry and resets memory after an alarm has sounded
  • Large centrally located Test/Hush alarm control button
  • Interconnectable with up to 24 devices (of which 18 can be initiating) including smoke, CO and heat alarms. See user's guide for complete instructions
  • 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 and 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
  • 360-degree mounting bracket allows mounting from any angle
  • Kidde offers a full range of 120V 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
  • Compatible with Kidde, FireX, code one and sentinel products
  • *Check with your state and local fire and building/safety codes for specific information regarding smoke and carbon monoxide alarms
  • UL/CSFM Ref. Kidde Part i4618AC
  • 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

Additional Resources

From the Manufacturer

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Specifications

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Questions & Answers

319Questions
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Q:Can I hard wire these with the Kidde KN-COPE-IC and have the voice activation on the KN COPE IC work in terms of the voice activation that exists on the KN COPE IC? I don't need CO on 4 of my 6 units.
by|Jan 28, 2023
0 Answer
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Q:Does this smoke detector also detect carbon monoxide?
by|Jan 26, 2023
2 Answers
Answer This Question

A:  Hello. No. You will want the KN-COPE-IC model 21029888 for that or if you want a model with a 10 year battery, you will want the I12010S model 21029878.

by|Jan 27, 2023

    A:  This model is only smoke detector. You will need combination carbon monoxide and smoke detector. 

    by|Jan 28, 2023
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      Q:Hats a good replacement for a usi 1204 model smoke detector? Just want to replace covers
      by|Jan 25, 2023
      1 Answer
      Answer This Question

      A:  Not exactly. Our alarms don't work with USI alarms. You would have to take down all of the old alarms before putting up any new alarms and you would have to change out and rewire the wiring harness plugs and change out the mounting brackets.

      by|Jan 26, 2023
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        Q:Why is my smoke detector flashing red every 10 seconds or so and. Ot making any noise
        by|Jan 24, 2023
        1 Answer
        Answer This Question

        A:  Hello. 1 red flicker every 30 seconds to a minute is normal operations of the alarm and the alarm in standby mode. 1 long red light every 10 seconds is the HUSH mode. It means the test button was pushed and the alarm is slightly less sensitive to smoke for about 10 minutes. After 10 minutes, it should go back to standby mode and a red flicker every 30 seconds to a minute. Call us while with the alarm at 1-800-880-6788 if you need further information.

        by|Jan 25, 2023
          Showing 1-4 of 319
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          Customer Reviews

          4.6 out of 5
          (3,675)
          • 4.6
            out of 3,675 reviews
          • 85%recommend this product
          Filter by:
          Showing 1-10 of 3,675 reviews
          No problems…E-Z maintenance
          We have four of these hardwired throughout our home. When we test them, they all activate properly and are very easy to shut down and go back to normal. They may not need it, but we do put new batteries in them every time we change our clocks, we figure that way there is no opportunity for a battery to go low and we just feel safer that way. We did have a house fire three years ago and again, they worked absolutely perfectly. Everybody was out and no problems and we were very thankful that we installed them when we remodeled our home.
          by
            • Recommended
            Easy installation and priced reasonably
            Needed hard wired smoke alarm
            by
            • Verified Purchase
            • Recommended
            Installed 2 and one BAD ALREADY
            Bought this unit March 5th 2021 in a two pack. Install the one right away, still functioning perfectly. The other just woke me up at 6:00 a.m. this morning. Three beeps, then stops, then three beeps. Tried resetting unit, no joy. Removed unit from Mount, reset, changed battery twice. No joy. Understand unit has 5-year warranty? Can you please replace?
            by
            Response from Kidde Product SupportApr 26, 2022
            Hello. If you have interconnected alarms, the first step is finding the initiating unit, as that is the key to stopping all of the interconnected units from sounding: To find the initiating unit, look for one that is flashing RED or GREEN at least once every second while in alarm mode, then follow the reset procedure on that unit. If the alarm stopped on its own before you could find that flashing light, the initiating unit will flash for 1.5 seconds every 10 seconds. If there are no obvious signs of a fire, the alarm should be cleaned before being reinstalled. False alarms are most commonly caused by something interfering with the sensor. To clean, after disconnecting the alarm and removing any removable battery: hold the unit by its edge and thoroughly blow through the gap on the side of the unit with compressed air (like keyboard cleaner). We recommend cleaning out all of your smoke alarms at least every 6 months to a year and at this point we would recommend cleaning out all of your other alarms as well as a preventative. Try cleaning out the alarms. If you have the issue again, find the alarm setting off all of the others and call us with that alarm in hand at 1-800-880-6788 so we can get this resolved for you. It is also possible that some of your alarms may be in one the locations to avoid listed in the owner's manual. This would especially include alarms being installed within 3 ft (.9m) of a forced air supply ducts used for heating or cooling, ceiling or whole house ventilating fans, or other high air flow areas. We recommend that alarms not be installed near vents, flues, chimneys, or fans. We recommend that alarms not be installed near doors or windows near areas directly exposed to the weather. We strongly recommend not to install these alarms in garages, attics, and crawl spaces as you will get temperatures, dust, insects, and chemicals that can cause nuisance alarms.
              It corrected the problem for endless beeping from my electric...
              It corrected the problem for endless beeping from my electric smoke detectors.
              by
              • Verified Purchase
              3 found this review helpful
              Easy to install
              After moving into our new place we needed to replace all the smoke detectors in the house they were originals from 1997. The four pack of smoke detectors was easy to install. After switching off the power, the only tool you will need is a Phillips head screw driver to remove the exisiting hard wired smoke detectors. It took about 3 minutes per smoke detector to switch them out. It was very easy.
              by
                • Recommended
                1 found this review helpful
                Swapped all detectors in home… was not aware that detectors expire after 10 years…!!! Thanks Home Depot for being there…!!!
                Swapped all detectors in home…was not aware that detectors expire after 10 years…!!! Thanks Home Depot for being there…!!!
                by
                • Verified Purchase
                • Recommended
                3 found this review helpful
                Easy peasy
                We had 7 of these that were 16 1/2 years in our house, (Out dated) The new alarms came with everything needed to retrofit the older alarms. Each one took 3-4 minutes to switch out. As of now all is great.
                by
                  • Recommended
                  6 found this review helpful
                  JUNK ALARM!!! BEWARE!!!
                  We have 6 of these hardwired in our home. They go off in the middle of the night scaring our family to death! My youngest son runs into our room crying because he thinks the house is on fire. We’ve replaced the batteries, even though they weren’t chirping. Then we’ve blown them out. Luckily, I found the one that was faulty because it started going off while it was in my hand. I just left it unplugged and took the battery out. Not a very safe thing to do, in case there’s a real fire! Also, It’s not a fun thing to do from 1:00 AM to 3:00 AM when I have to be at work at 5:00 AM. Very upset about this crap. It’s not the first time this has happened!
                  by
                  Response from customer careNov 1, 2021
                  hello Pissedoffcustomer, Thanks for reaching out. We value your input and would like to assist if possible. Please call Kidde support at 1-800-880-6788. Open Monday through Friday from 8:00 AM – 5:00 PM EST. They are the experts and will be able to assist. Thank you.
                    The Kidde Firex Hardwired Smoke Detectors were very easy to install and wire. The great thing abo...
                    The Kidde Firex Hardwired Smoke Detectors were very easy to install and wire. The great thing about them is the Ionization Sensor,and that they also have a 9-Volt Battery Backup in case you loose power. The price was perfect and because they came in a 4-Pack, I was able to replace 3 which I had in my home along with allowing me to add another in my laundry room. I find the KIDDE brand to be perfect for any home. Along with the smoke detector's I have also installed the KIDDE Carbon Monoxide / Smoke Detector combos in my kitchen and garage.
                    by
                    • DIY
                    • Verified Purchase
                    • Recommended
                    2 found this review helpful
                    It’s great!
                    Last owner of this house is a buster. This alarm is also very loud
                    by
                      • Recommended
                      1 found this review helpful
                      Showing 1-10 of 3,675 reviews

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                      Alarm/Detector FeaturesBattery Back-Up,Hush Feature,Interconnected,Value PackBattery Back-Up,Hush Feature,Interconnected,Value Pack,Visual Light Indicator10-Year Battery,Battery Back-Up,Hush Feature,Interconnected,Tamper Resistant,Voice Alert,Voice Message System,Wire-free InterconnectBattery Back-Up,Interconnected,Tamper Resistant
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