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Kidde i4618AC Hardwire Smoke Alarm, 4 Pack

  • Based on 1,437 reviews
Condition: New
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Availability: 12 left in stock
Fulfilled by Zipship Goods

Arrives Thursday, Jan 22
Order within 15 hours and 52 minutes
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Description

The Firex i4618AC Hardwire Smoke Alarm by Kidde is an ionization smoke alarm that operates on a 120V power source with 9V battery backup. The Firex i4618AC smoke alarm offers many benefits for installers and homeowners, such as its easy-access slide load front battery door.

Product Dimensions ‏ : ‎ 4.72 x 3.94 x 3.94 inches; 2.58 Pounds


Item model number ‏ : ‎ i4618AC


Batteries ‏ : ‎ 4 9V batteries required.


Date First Available ‏ : ‎ October 9, 2018


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Jan 22

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Quality product
A great replacement detector. The 4 pack came in great condition, exactly as ordered. A new connector was included as this new detector had a different pin arrangement. Easy to install, working great
Reviewed in the United States on October 12, 2025 by Gale Cary

  • Great product
great product exactly what i need and easy install. nice feature comes with batteries. would have like to seen this in a 5pack
Reviewed in the United States on November 9, 2025 by Chris

  • Works great.
Direct replacement for the ones installed previously. Easy to set up and install.
Reviewed in the United States on November 18, 2025 by Timshultz2000

  • Not new. Batteries dead.
These detectors were manufactured in 11/23. I just got them in 10/25 9v batteries were dud. Needed replacement. This is my only gripe. Had to rewrite with the provided “harness”. Even the bases needed replacement in spite of the old ones being replaced being Kidde also. Will report back if we have any issues. ... show more
Reviewed in the United States on October 2, 2025 by Kevin Cormack

  • Perfect Replacement
Perfect replacement for the 10 year old ones i had to replace.
Reviewed in the United States on November 17, 2025 by MaryEllen Lozier

  • Worked perfectly and easy to install
Worked perfectly and easy to install to existing system
Reviewed in the United States on November 10, 2025 by JohnstonMan

  • Easy to install
I replaced my current fires smoke detectors with these. They look the same as my old ones. Very easy to install. It comes with a new installation plate which is very easy to install. The only thing you need some screw on connectors to connect the wires
Reviewed in the United States on October 23, 2025 by carguy

  • works good and fits existing wiring
I was looking for this older version of the detector and found this 4 pack. Since mine are old and wearing out (over 8-10 yrs) I purchased these so I wouldn’t need to retire, just plug them in to existing sockets. Worked out good.
Reviewed in the United States on November 1, 2025 by icyclops

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