Emarter
BRK First Alert 9120BFF/ SMI100-AC Smoke Detector, Hardwired Alarm with Battery Backup, White, 1-Pack
$20.43
Price accurate as of Aug 7, 2026. Check current price on Amazon.
See Price on AmazonThis BRK item is priced 76% below the 414,443-product Tools & Home Improvement average of $84.06, and rated above the category's 4.4-star average.
Specifications
| Brand | BRK |
|---|---|
| Category | Tools & Home Improvement |
| ASIN | B00O8MVW3U |
| Listed Since | Jul 11, 2026 |
Price History
Checked 30 times, trending down — a real price history, not a one-time listing.
| Date | Price |
|---|---|
| Aug 7, 2026 | $20.43 |
| Aug 6, 2026 | $20.43 |
| Aug 5, 2026 | $20.43 |
Best-Seller Rank History
Amazon's own sales rank within Tools & Home Improvement, over time.
| Date | Rank |
|---|---|
| Aug 7, 2026 | #2,065 |
| Aug 6, 2026 | #2,065 |
| Aug 5, 2026 | #2,065 |
Common Questions
Is this a good price for Tools & Home Improvement?
At $20.43, this is about 76% below the 414,443-product Tools & Home Improvement average of $84.06.
How well does this sell compared to other Tools & Home Improvement products?
It's ranked #2,065 in Tools & Home Improvement by Amazon's own best-seller rank, and its price has been trending down over our last 30 price checks.
How reliable is the 4.7 star rating?
It's based on 19,265 Amazon reviews, compared to a Tools & Home Improvement category average of 4.4 stars.
