Emarter
First 9120b Hardwired Detector 1 Pack
$21.00
Price accurate as of Jul 25, 2026. Check current price on Amazon.
See Price on AmazonThis First 9120b item is priced 75% below the 414,301-product Tools & Home Improvement average of $84.08, and rated above the category's 4.4-star average.
Specifications
| Brand | First 9120b |
|---|---|
| Category | Tools & Home Improvement |
| ASIN | B00O8MVW3U |
| Listed Since | Jul 11, 2026 |
Price History
Checked 17 times, trending flat — a real price history, not a one-time listing.
| Date | Price |
|---|---|
| Jul 25, 2026 | $21.00 |
| Jul 24, 2026 | $21.00 |
| Jul 23, 2026 | $21.00 |
Best-Seller Rank History
Amazon's own sales rank within Tools & Home Improvement, over time.
| Date | Rank |
|---|---|
| Jul 25, 2026 | #1,812 |
| Jul 24, 2026 | #1,812 |
| Jul 23, 2026 | #1,812 |
Common Questions
Is this a good price for Tools & Home Improvement?
At $21.00, this is about 75% below the 414,301-product Tools & Home Improvement average of $84.08.
How well does this sell compared to other Tools & Home Improvement products?
It's ranked #1,812 in Tools & Home Improvement by Amazon's own best-seller rank, and its price has been trending flat over our last 17 price checks.
How reliable is the 4.6 star rating?
It's based on 19,074 Amazon reviews, compared to a Tools & Home Improvement category average of 4.4 stars.
