Kidde Hardwire Smoke Detector
with 9V Battery Backup and Front Load Battery Door | Model I4618AC
Price as of 2026-06-05. Check Amazon for the current price.
Quick Decision
Price Intelligence
Currently $42.99 — the 90-day average is $22.20.
All-time low: $16.80 on Mon Aug 14 (from 71 price checks).
Is This Right For You?
- •Budget-conscious shoppers — priced below 68% of Smoke Detectors
- •Kidde loyalists — the brand spans 155 products in our database
- •BRK First Alert 9120BFF/ SMI100-AC Smoke Detector offers a better rating (4.7/5) at a similar or lower price ($19)
- •BRK First Alert 9120BFF/ SMI100-AC Smoke Detector — 56% cheaper at $19 (Score A+)
- •Kidde Smoke Detector — higher rated at 4.6/5 ($20)
📊 Based on data analysis of 37 products in this category.
Mubboo Score: B+
How It Compares
This Product Kidde Hardwire Smoke Detector | Most Popular BRK First Alert 9120BFF/ SMI100-AC Smoke Detector | Best Rated Kidde Smoke Detector | Best Value First Alert SMI100-AC | |
|---|---|---|---|---|
| Price | $42.99 | $18.99 | $19.88 | $19.49 |
| Rating | 4.5/5 | 4.7/5 | 4.6/5 | 4.6/5 |
| Reviews | 2,323 | 19,205 | 7,603 | 2,162 |
| Mubboo Score | B+ | A+ | A | A |
Quick Specs
- Alarm
- Audible
- Color
- White
- Style
- Hardwired Smoke Detector
- Unit Count
- 1 Count
- Item Weight
- 0.6 Pounds
- Sensor Type
- Ionization
- Manufacturer
- Kidde Safety
- Model Number
- I4618AC
What People 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.
- Ease of Installation
- Good Value
- Reliable Performance / No False Alarms
- Compatibility with Existing Mounts
- Long Battery Life / No Battery Changes
- Pre-installed Battery Drains Quickly
- Dead on Arrival / Activation Issues
- Flimsy Build Quality
- Confusing Instructions
Expert Picks in Smoke Detectors
- Kidde Smart Smoke Detector — Best smoke detector overall
- First Alert Battery Smart Smoke & Carbon Monoxide Alarm with Nest Protect — Best for Google Nest users
- Kidde Ring-Enabled Smart Smoke and Carbon Monoxide Detector — Best smoke detector for Alexa and Ring users
- First Alert SMI100 Dual Sensor Smoke Detector — Best budget smoke detector
Category recommendations from independent expert publications. Source links in References.
Related Video Reviews
Key Features
- ✦Front Load Battery Compartment for easy battery replacement
- ✦Hush alarm control button silences nuisance alarms
- ✦9-Volt battery backup provides protection during power outages
- ✦Pre-stripped wiring harness with easy-off caps ensures quick installation
- ✦360° mounting bracket allows mounting from any angle
Source: product listing on Amazon.
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
Other Smoke Detectors
Featured in Our Reviews
Bottom Line
Kidde Hardwire Smoke Detector earns Mubboo Score B+. At $43 it's above the 90-day average of $22 — waiting for a dip may pay off. Rated 4.5/5 from 2,323+ reviews. Strong buy if: budget-conscious shoppers, kidde loyalists. Skip if: brk first alert 9120bff/ smi100-ac smoke detector offers a better rating (4.7/5) at a similar — BRK First Alert 9120BFF/ SMI100-AC Smoke Detector (Score A+, $19) may fit better.
Frequently Asked Questions
Is the Kidde Hardwire Smoke Detector worth buying in 2026?
It earns a Mubboo Score of B+, with a 4.5/5 rating from 2,323 reviews — better than 51% of Smoke Detectors we track.
How much does the Kidde Hardwire Smoke Detector cost?
It is currently $42.99. The 90-day average is $22.20 and the all-time low we recorded is $16.80.
How does the Hardwire Smoke Detector compare to other Smoke Detectors?
The category's most-reviewed alternative is the BRK First Alert 9120BFF/ SMI100-AC Smoke Detector (4.7/5, 19,205 reviews, $18.99). The Hardwire Smoke Detector carries a Mubboo Score of B+ vs A+.
Sources & References
Mubboo may earn a commission from purchases made through links on this page. Prices and availability are accurate as of the last sync (2026-06-05) and may change.