28th Apr 2026, 09:49 AM
First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 1-Pack
Price may vary by location, shipping cost, and availability.
-22% Off
$19.67
$29.99
+ $16.99
Highest: $27.25
Average: $19.98
Lowest: $16.00
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, 1-Pack here. This product's current Price in USA is $19.67. The average and highest prices are $19.98 and $27.25 respectively. The current offer price of the product is $36.66.
| Lowest Ever Price | $16.00 |
|---|---|
| 1st May 2025 | |
| Average Price | $19.98 |
| Based on 841 days price tracking | |
| Highest Price | $27.25 |
| 19th Jun 2024 | |
Price History of All Variants of First Alert SMI100-AC Hardwire Interconnect Smoke Alarm...
Current Price in USA
| Price | $19.67 |
|---|---|
| MRP | $29.99 |
| Savings | $10.32 |
| Discount | 34.41% |
Recent Price Drops on First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 1-Pack
Price Drop 29th Sep 2025
$19.16 → $16.22
15.34% drop
Price Drop 30th May 2025
$18.82 → $17.51
6.96% drop
Price Drop 30th Apr 2025
$17.00 → $16.00
5.88% drop
Price Drop 29th Mar 2025
$19.05 → $17.96
5.72% drop
Price Drop 11th Dec 2024
$19.00 → $17.98
5.37% drop
Price Drop 25th Sep 2024
$21.25 → $19.42
8.61% drop
Price Drop 25th Aug 2024
$26.00 → $23.93
7.96% drop
Price Drop 16th Aug 2024
$23.93 → $21.96
8.23% drop
Price Drop 31st Jul 2024
$26.00 → $24.26
6.69% drop
Price Drop 8th Jul 2024
$26.00 → $24.61
5.35% drop
Product Information
Details
| Product Name | First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 1-Pack |
|---|---|
| Store Product Code | B0CJMN3443 |
| 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 | 1-Pack |
| Dimensions | 5.6"D x 5.6"W x 1"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 sound
- 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 1962 reviews
First Alert SMI100-AC Hardwire Interconnect Smoke Alarm has 9.2 rating out of 10. This average rating is consist of 1962 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.