29th Apr 2026, 05:08 AM
First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 3-Pack
Price may vary by location, shipping cost, and availability.
-8% Off
$57.99
$79.99
+ $28.13
Highest: $83.94
Average: $55.94
Lowest: $32.02
Price History Graph
Offer Price Prices
Lowest: -
Average: -
Highest: -
Price History Information
You can check the price history of First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 3-Pack here. This product's current Price in USA is $57.99. The average and highest prices are $55.94 and $83.94 respectively. The current offer price of the product is $86.12.
| Lowest Ever Price | $32.02 |
|---|---|
| 4th Sep 2025 | |
| Average Price | $55.94 |
| Based on 843 days price tracking | |
| Highest Price | $83.94 |
| 28th Jun 2024 | |
Price History of All Variants of First Alert SMI100-AC Hardwire Interconnect Smoke Alarm...
Current Price in USA
| Price | $57.99 |
|---|---|
| MRP | $79.99 |
| Savings | $22.00 |
| Discount | 27.50% |
Recent Price Drops on First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 3-Pack
Price Drop 14th Apr 2026
$60.16 → $50.75
15.64% drop
Price Drop 31st Mar 2026
$68.88 → $50.30
26.97% drop
Price Drop 19th Mar 2026
$55.88 → $50.70
9.27% drop
Price Drop 5th Jan 2026
$55.25 → $52.00
5.88% drop
Price Drop 20th Dec 2025
$56.90 → $52.26
8.15% drop
Price Drop 11th Dec 2025
$57.32 → $52.29
8.78% drop
Price Drop 3rd Sep 2025
$49.64 → $32.02
35.5% drop
Price Drop 17th Jun 2025
$50.99 → $47.95
5.96% drop
Price Drop 28th Apr 2025
$52.68 → $47.99
8.9% drop
Price Drop 12th Apr 2025
$51.73 → $47.80
7.6% drop
Price Drop 28th Jan 2025
$62.59 → $49.85
20.35% drop
Price Drop 25th Jan 2025
$73.79 → $63.99
13.28% drop
Price Drop 20th Jan 2025
$52.49 → $49.85
5.03% drop
Price Drop 1st Jan 2025
$53.75 → $49.85
7.26% drop
Price Drop 23rd Dec 2024
$52.83 → $49.85
5.64% drop
Price Drop 5th Nov 2024
$52.93 → $48.49
8.39% drop
Price Drop 30th Oct 2024
$53.99 → $48.00
11.09% drop
Price Drop 12th Sep 2024
$59.99 → $56.99
5% drop
Price Drop 7th Sep 2024
$64.00 → $59.99
6.27% drop
Price Drop 16th Jul 2024
$71.26 → $61.22
14.09% drop
Price Drop 15th Jul 2024
$79.99 → $71.26
10.91% drop
Price Drop 4th Jul 2024
$79.99 → $71.26
10.91% drop
Price Drop 1st Jul 2024
$83.94 → $72.02
14.2% drop
Price Drop 23rd Jun 2024
$79.99 → $72.26
9.66% drop
Price Drop 26th Mar 2024
$64.99 → $61.09
6% drop
Price Drop 22nd Jan 2024
$67.53 → $58.49
13.39% drop
Product Information
Details
| Product Name | First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 3-Pack |
|---|---|
| Store Product Code | B0CJLMM1TQ |
| Store Name | amazon.com |
| Brand | First Alert |
| Rating | 9.2 / 10 |
| Category | Smoke Detectors & Fire Alarms |
| Product Manufacturer | Resideo |
| Model Number | SMI100-AC |
| Color | White |
| Size | 3-Pack |
| Dimensions | 5"D x 5"W x 5"H |
Features
- First Alert's Precision Detection advanced sensing technology complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency
- Through early warning interconnect, when one alarm sounds, all compatible alarms will soun
- Battery backup provides continuous protection during power outages
- Alarm indicator visually identifies the unit that initiated the alarm
- Quick Connect Plug included allows for easy installation with no need to rewire
Images
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Rating and Reviews
9.2 Based on 1931 reviews
First Alert SMI100-AC Hardwire Interconnect Smoke Alarm has 9.2 rating out of 10. This average rating is consist of 1931 individual ratings. You can rate this product at product review page.
* Predictions is created on based of past prices and trends, it does not guarantee that it will happen. These are just prediction for theoretical information only.