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First Alert 9120B Smoke Detector, Hardwired Alarm with Battery Backup, 6-Pack
AMAZON.COM
Price
$ 89.99
Last price was updated on: 12th Dec 2025, 08:50 AM
Pricing Analytics & Buying Assistance
Price Score:
Good
Poor
Average
Good
Excellent
Current Price
$89.99
$89.99
Lowest
$91.18
Highest
Buying Advice:
Good – Worth buying. 80% chance price goes up. Buy soon.
Good – Worth buying. 80% chance price goes up. Buy soon.
Price History Benchmarks
Lowest Ever
$89.99
12th Dec 2025
Highest Ever
$91.18
19th Nov 2025
Average Price
$91.01
14 data points
Last 3M Low
$89.99
12th Dec 2025
Last 6M Low
$89.99
12th Dec 2025
Last 12M Low
$89.99
12th Dec 2025
Price History Chart
Product Technical Information
| Product Code | B000KKHWLU |
|---|---|
| Market Place | amazon.com |
| Market Place Name | Amazon.com |
| Brand Name | First Alert |
| Rating | 4.7 ( 11517 ratings ) |
| Category | Smoke Detectors & Fire Alarms |
| Manufacturer | First Alert |
| Model Number | 9120B6CP |
| Item Color | White |
| Item Size | 6-Pack |
| Item Dimensions | 1.9"D x 5.6"W x 5.6"H |
Frequently Asked Questions
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What is the lowest price ever for this product?The lowest price for First Alert 9120B Smoke Detector Hardwired Alarm with Battery Backup 6-Pack was $89.99 on 12th Dec 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 9120B Smoke Detector Hardwired Alarm with Battery Backup 6-Pack was $91.18 on 19th Nov 2025. Prices have dropped since then.
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What is the average price of this product?The average price for First Alert 9120B Smoke Detector Hardwired Alarm with Battery Backup 6-Pack is $91.01 (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 9120B Smoke Detector Hardwired Alarm with Battery Backup 6-Pack reached a low of $89.99 on 12th Dec 2025. Recent price trends may help you decide when to buy.
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Should I buy this product now?Worth buying. The price is good, but you may wait for a better deal. 80% chance price goes up. Price may increase soon.