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First Alert Smoke Alarm, Battery-Operated Detector with Test & Silence Button, SMI100, 1-Pack
AMAZON.COM
Price
$ 26.43
Last price was updated on: 11th Dec 2025, 06:21 AM
Price History Benchmarks
Lowest Ever
$5.20
19th Aug 2023
Highest Ever
$34.99
29th Oct 2024
Average Price
$10.37
542 data points
Last 3M Low
$26.43
6th Dec 2025
Last 6M Low
$15.23
14th Jul 2025
Last 12M Low
$12.54
7th Mar 2025
Price History Chart
Product Technical Information
| Product Code | B000BD6BSG |
|---|---|
| Market Place | amazon.com |
| Market Place Name | Amazon.com |
| Brand Name | First Alert |
| Rating | 4.5 ( 22544 ratings ) |
| Category | Smoke Detectors & Fire Alarms |
| Manufacturer | Resideo |
| Model Number | SMI100 |
| Item Color | White |
| Item Size | 1-Pack |
| Item Dimensions | 5.4"D x 5.4"W x 1.9"H |
Frequently Asked Questions
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What is the lowest price ever for this product?The lowest price for First Alert Smoke Alarm Battery-Operated Detector with Test amp Silence Button SMI100 1-Pack was $5.20 on 19th Aug 2023. This is the best recorded deal so far.
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What is the highest price ever for this product?The highest price for First Alert Smoke Alarm Battery-Operated Detector with Test amp Silence Button SMI100 1-Pack was $34.99 on 29th Oct 2024. Prices have dropped since then.
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What is the average price of this product?The average price for First Alert Smoke Alarm Battery-Operated Detector with Test amp Silence Button SMI100 1-Pack is $10.37 (542 data points). This helps you compare current deals.
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What is the lowest price in the last 3 months?In the last 3 months, First Alert Smoke Alarm Battery-Operated Detector with Test amp Silence Button SMI100 1-Pack reached a low of $26.43 on 6th Dec 2025. Recent price trends may help you decide when to buy.