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Kidde 21026063 AC Hardwired Smoke Detector Alarm with 9V Back up and Front Load Battery Door, White

  • Based on 2,263 reviews
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Availability: In Stock.
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Arrives Thursday, Sep 4
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Features

  • Ionization sensor technology senses invisible fire particles, associated with fast flaming fires
  • Smoke alarm operates on a 120V wired power source with a 9-Volt alkaline battery backup (included)
  • Front-loading battery door allows for easy change of the battery without removing the alarm from the mounting bracket
  • Test-Hush button makes it easy to test the smoke detector and silence false alarms that occur from cooking or shower steam
  • UL Listed with a 10-year limited warranty which begins when the alarm is powered on, if that date is unknown it should be assumed the alarm should be replaced.

Description

The Kidde i4618 is an AC/DC powered ionization smoke alarm that operates on a 120V power source with 9V battery backup 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. SMOKE ALARM FEATURES • Model ADC features a False Alarm Control which, when activated, quiets unwanted alarms for up to 15 minutes. • This smoke alarm is powered by 120V AC and a 9-volt battery back-up source. AC/DC smoke alarms offer added protection in the event of a power failure or a drained battery. • Unique power connector prevents interconnection with incompatible smoke alarms or security systems. • This smoke alarm may be interconnected with as many as 11 other Firex model FADC, AD and ADC smoke alarms, or as many as 6 Firex model ADH heat alarms for a total of not more than 18 interconnected devices. • Optional tamper-resist feature can serve as a safeguard against tampering. • Unique “battery missing” lockout. The smoke alarm will not attach to the mounting bracket if a battery is not in the battery pocket. • Improperly connected or weak battery signal. The smoke alarm will sound a short beep about once a minute if the battery is weak or improperly connected. • Separate green and red LEDs indicate that the smoke alarm is receiving AC power, working under normal operation, in alarm, or under false alarm control. • Loud alarm horn—85 decibels at 10 feet—sounds to alert you to an emergency. • This alarm incorporates the internationally recognized horn signal for evacuation. During alarm mode, the horn produces three short beeps followed by a 2 second pause and then repeats. This pattern is somewhat different than the previous alarm sound, which continually beeped. • Test button checks smoke alarm operation. Model ADC also features a False Alarm Control which, when activated, quiets unwanted alarms for up to 15 minutes.

Brand: Kidde


Style: Classic


Power Source: Hardwired


Color: White


Product Dimensions: 4"D x 4"W x 2"H


Item Weight: 8 ounces


Alarm: Smoke Alarm


Operating Humidity: 5% to 95% relative humidity, non-condensing


Upper Temperature Rating: 37.8 Degrees Celsius


Sensor Type: Ionization


Brand: ‎Kidde


Style: ‎Classic


Power Source: ‎Hardwired


Color: ‎White


Product Dimensions: ‎4"D x 4"W x 2"H


Item Weight: ‎8 ounces


Alarm: ‎Smoke Alarm


Operating Humidity: ‎5% to 95% relative humidity, non-condensing


Upper Temperature Rating: ‎37.8 Degrees Celsius


Sensor Type: ‎Ionization


Global Trade Identification Number: ‎38


Number of Items: ‎1


Manufacturer: ‎Kidde Safety


UPC: ‎047871260638


Part Number: ‎21026063


Item model number: ‎i4618


Is Discontinued By Manufacturer: ‎Yes


Size: ‎1 Pack


Pattern: ‎Detector


Item Package Quantity: ‎1


Included Components: ‎Smoke Alarm, User Guide, Wiring Harness


Batteries Included?: ‎Yes


Batteries Required?: ‎Yes


Battery Cell Type: ‎Alkaline


Date First Available: November 7, 2014


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Sep 4

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Easy to install and Reliable Smoke Detector (Last set lasted 5+ years)
I'm very satisfied with this smoke detector. I had 8 in my house and all are faultless. Make sure to buy a decent 9 Volt Battery so you don't have to mess with it other than the routine testing. Pros: Easy Installation: The smoke detector was incredibly easy to install. It comes with a 9V battery, making it a true plug-and-play solution granted your existing pigtails are the same. If not, then just wire the connectors that came with it and you're good to go. Convenient Design: The front-load battery door is a great feature, allowing for quick and easy battery replacement without removing the detector from the ceiling. If you have a ceiling. This feature is god send. Compatible with Existing Wiring: I bought the same model as my previous set, which lasted 5 years. This allowed me to use the existing connector plug, making the replacement process seamless and hassle-free. Reliable Performance: Having had good experience with my previous Kidde detectors, I trust the reliability and effectiveness of this model in keeping my home safe. Overall, the Kidde 21026063 is a dependable and user-friendly smoke detector. If you're looking for an easy installation and reliable performance, this is an excellent choice. ... show more
Reviewed in the United States on May 21, 2024 by Feedback Jedi

  • They work easy install.
Perfect exact replacement that I could not find locally
Reviewed in the United States on August 19, 2025 by Jeffrey Goerlich

  • Works great
Why did you pick this product vs others?: Bought to replace detector in home
Reviewed in the United States on June 29, 2025 by Placerville Lady

  • Easy to install and a good price
I just got these today and they were extremely easy to install. I already had a similar model install by the same maker. I did use the Kidde alarm adapter, which was wonderful because I didn't have to change any wiring at all. I definitely recommend this product.
Reviewed in the United States on April 26, 2025 by Mousy Mousy

  • Great replacement
I replaced a 20yo smoke detector with this one. Other than having to cut the connector off and use the old one to fit into my system, it was pretty much plug and play. I've had no false alarms or battery problems since changing it out. Great deal!
Reviewed in the United States on April 9, 2025 by B. Williams

  • GOOD BUY
I needed a big ladder because we have 10' ceilings but oyherwise they were easy to install. The battery cover is an improvement over the ones on our old Kidde smoke detectors.
Reviewed in the United States on April 29, 2025 by tom

  • Quick if replacing same brand.
Will fit without wiring adapter. Change out base plate.
Reviewed in the United States on August 14, 2025 by K.L.H.

  • Adequate replacement for original house wired Smoke Detector unit(s)
Install guide print is way too small for readability - I have 20/20 vision and had to take a picture of the instructions with my iPad in order to zoom in and read the details. My installation was replacing Smoke only wired detectors in moy home - which were already installed when I purchased my home 15 years ago - and could be as old at 26 years when the house was first built. I had to test the neutral wiring and confirm the four wired detectors were on the same line so they would Pair - this made my install more complicated than some would be. I am very handy and comfortable with testing wiring, etc - but it was not a simple "drop and swap" in my home. Yours may be different if you have the same wiring connectors this model has. If not- you'll need to splice them into the electrical boxes with wire caps if replacing older defunct smoke detectors. Once installed they have operated great. I had one false alarm from over-zealous cooking (aka - burning a steak) - and all four rang throughout the house when the first-floor kitchen area one was triggered. Now that my wiring is in place a replacement would take less than 5 minutes (longer to get the stepladder than actually doing the swap). So - if you are REPLACING EXISTING SIMILAR MODELS - this isw a no-brainer to upgrade and get both smoke and CO2 protection. If you have much older smoke detectors - it may take you a while longer to figure out your wiring - or to hire a professional to install properly ... show more
Reviewed in the United States on January 27, 2020 by Dan from Carmel, IN

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