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First Alert SC-9120B Hardwired Smoke and Carbon Monoxide Alarm with Battery Backup 2 Pack
AMAZON.COM
Price
$ 122.40
Last price was updated on: 12th Dec 2025, 08:50 AM
Pricing Analytics & Buying Assistance
Price Score:
Average
Poor
Average
Good
Excellent
Current Price
$122.40
$97.40
Lowest
$122.40
Highest
Buying Advice:
Average – Price may drop. 37% chance price goes down. Wait to save.
Average – Price may drop. 37% chance price goes down. Wait to save.
Price History Benchmarks
Lowest Ever
$97.40
29th Nov 2025
Highest Ever
$122.40
12th Dec 2025
Average Price
$105.85
14 data points
Last 3M Low
$97.40
29th Nov 2025
Last 6M Low
$97.40
29th Nov 2025
Last 12M Low
$97.40
29th Nov 2025
Price History Chart
Product Variants
Product Technical Information
| Product Code | B078HW9GY4 |
|---|---|
| Market Place | amazon.com |
| Market Place Name | Amazon.com |
| Brand Name | First Alert |
| Rating | 4.7 ( 278 ratings ) |
| Category | Smoke Detectors & Fire Alarms |
| Manufacturer | First Alert |
| Model Number | SC9120B |
| Item Color | 2 Units (Sc-9120b) |
| Item Size | 2 Pack |
Frequently Asked Questions
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What is the lowest price ever for this product?The lowest price for First Alert SC-9120B Hardwired Smoke and Carbon Monoxide Alarm with Battery Backup 2 Pack was $97.40 on 29th Nov 2025. 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 SC-9120B Hardwired Smoke and Carbon Monoxide Alarm with Battery Backup 2 Pack was $122.40 on 12th Dec 2025. Prices have dropped since then.
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What is the average price of this product?The average price for First Alert SC-9120B Hardwired Smoke and Carbon Monoxide Alarm with Battery Backup 2 Pack is $105.85 (14 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 SC-9120B Hardwired Smoke and Carbon Monoxide Alarm with Battery Backup 2 Pack reached a low of $97.40 on 29th Nov 2025. Recent price trends may help you decide when to buy.
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Should I buy this product now?Wait. Price may drop soon, consider waiting for a better offer. 37% chance price goes down. Price likely to decrease.