Kidde 21007584 I4618 Firex Hardwire Ionization Smoke Detector with Battery Backupwhite
Kidde

Kidde 21007584 I4618 Firex Hardwire Ionization Smoke Detector with Battery Backupwhite

$66.95$503.64★ 4.4(323 reviews)
Mubboo Score 4.3/10
  • Tamper resist locking feature deters alarm theft
  • Alarm memory flashes red LED indicating which unit was the initiating alarm in interconnected system.
  • TBattery backup provides protection in case of power failure
  • Interconnectable with up to 24 devices (of which 18 can be initiating) including smoke, CO and heat alarms. See user’s guide for complete in…
  • Front battery pull tab allows battery activation without removing alarm from mounting bracket.
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Mubboo Value Score: 4.3/10

Quality8.8/10
based on 4.4/5 customer rating
Popularity0.2/10
323 reviews, top 65% in Smoke Detectors
Value4.1/10
priced below 41% of Smoke Detectors

How it stacks up

Rated 4.4/5 — better than 38% of 37 Smoke Detectors we track. Mid-tier pricing at $66.95.

Head-to-Head vs Category Leader

KiddeKidde (Leader)
Price$66.95$49.97
Rating4.4/54.9/5
Reviews32318
Mubboo Score4.3/105.3/10

The category leader Kidde Smoke Detector, AA Battery-Powered, Wire offers better ratings at $49.97.

Quick Specs

Alarm
Audible
Color
White
Style
Hardwired Smoke Detector
Unit Count
1.0 Count
Item Weight
21.6 Pounds
Sensor Type
Ionization
Manufacturer
Kidde
Model Number
21007584

What reviewers say

Synthesized from 40 reviews · 100% verified purchases.

Test units upon arrival, as included batteries may be dead or drain quickly. Verify activation tab functions and note that sealed-battery models may not interconnect with other alarms.

Rating reliability

Moderately reviewed — reasonably reliable

About Kidde

  • 155 products in our database
  • Average rating: 4.6/5 across all products
  • Price range: $12.87 – $381.75
  • Categories: Carbon Monoxide Detectors, Fire Extinguishers, Smoke Detectors

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BRK First Alert 9120BFF/ SMI100-AC Smoke Detector, Hardwired Alarm with Battery Backup, White, 1-Pack
BRK First Alert 9120BFF/ SMI100-AC Smoke Detector, Hardwired Alarm with Battery Backup, White, 1-Pack
$18.99 ★4.7
Hilmon Smoke Alarm Fire Detector,Battery Operated Photoelectric Smoke Detector with Test Button and Low Battery Warning, Fire Alarms Smoke Detectors for Home, 6 Pack
Hilmon Smoke Alarm Fire Detector,Battery Operated Photoelectric Smoke Detector with Test Button and Low Battery Warning, Fire Alarms Smoke Detectors for Home, 6 Pack
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First Alert 9120B 120 Volt Hardwired Smoke Alarm With Battery Back Up 5 Pack
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Frequently Asked Questions

Is the Kidde Kidde 21007584 I4618 Firex Hardwire Ionization Smoke Detector wi worth buying in 2026?

It earns a Mubboo Score of 4.3/10, with a 4.4/5 rating from 323 reviews — better than 38% of Smoke Detectors we track.

How much does the Kidde Kidde 21007584 I4618 Firex Hardwire Ioni cost?

It is currently $66.95 — mid-tier pricing for Smoke Detectors.

How does it compare to the top-rated Smoke Detectors?

The category leader Kidde Smoke Detector, AA Battery-Powered, Wire offers better ratings at $49.97.

Sources & References

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