First Alert Hardwired 120V Ionization Smoke Alarm 9120B
- Brand:
- First Alert
- Model Number:
- 9120B-12ST
- UPC:
- 029054513014
- EAN:
- 0029054513014
- ASIN:
- B00O8MVW3U
- Walmart SKU:
- 20558402
Market rate of $18.45 positions buyers 0.0% under the established average.
| Price Type | Price | Date |
|---|---|---|
|
Highest Price
|
$59.95 | |
|
Lowest Price
|
$13.95 | |
|
Most Recent Price
|
$59.95 |
| Price Type | Price | Date |
|---|---|---|
|
Highest Price
|
$23.90 | |
|
Lowest Price
|
$18.45 | |
|
Most Recent Price
|
$18.45 |
Tracking History: We have tracked First Alert Hardwired 120V Ionization Smoke Alarm 9120B since 3/25/2025. The most recent price update was on Nov 28, 2025.
Price Range: Over the past 90 days, the price has ranged from $18.45 (lowest on 11/28/2025) to $23.90 (highest on 3/25/2025). The average price during this period is $22.81.
Current Trend: No Walmart.com pricing data available for analysis.
Customer Insights: Rated 4.6/5 from 151 reviews.
I purchased these smoke detectors because they were the same type the builder used. Purchased 7, reallly only needed 6. When I tried to return, was told I would have to pay for the prepaid shipping label. When I asked how much that was, the supplier never responded back. Item was $13.99.
I needed to return this product. I contacted seller two times but never care to respond. Never buying anything from Walmart. Amazon is better
We needed to replace the existing smoke alarms in several units and found that Zoro carried them at a remarkable price and included free shipping in my purchase. I would definitely recommend Zoro to my friends and colleagues and would make this purchase again and again.
The product met my needs, as I have 10 of these detectors wired in my duplex and didn't want to tear out the old wiring and install different detectors. The previous detectors lasted up to 10 years and I am replacing them as they wear out. They do have battery back-up and are also hard wired to power and to a line that connects to all the other detectors, so that when one goes off, they signal all of the others to emit an alarm, as well. After so many years they start making false warnings and have to be replaced. I don't mind replacing the batteries every 6 months. It is my understanding that the new law requires the manufacturers to discontinue making smoke detectors that don't have a battery that will last for 10 years, but allows companies to sell existing stock for a limited time. I was very happy to find that Zoro carried these in stock (identical to the existing ones) and ordered enough to provide replacements for many years. At the low price Zoro is charging, I recommend anyone that is using the same model to consider purchasing replacements instead of removing and rewiring existing locations to accommodate the new 10-year and recycle units.
Still waiting for them to be delivered from NY to Mass I should have just drove there myself would have been quicker ordered at beginning of November now its December
Smoke alarms should be replaced every ten years. My house is 20 years old and these were the exact replacement models at a reasonable cost. Delivery was fast.
I am so happy with this smoke alarm. Our old one would not stop beeping and it did not matter how many batteries I changed out or how many times I reset it. I bought this off of a suggestion from the fire department and it proved to work. Thank you for having this product.
It fit exactly into the same bracket and has worked perfectly ( no loud random beeping ) .
A++++++Seller, Item better than expected, Super fast shipping, Great packing, Very satisfied, Will buy from again.
This is the third time I bought the smoke alarms from this company. I will continue buy from them without question.
Detailed price history for the past 90 days
No Walmart.com pricing data available for analysis.
Third-Party Sellers prices have ranged from $59.95 (Jul 24) to $59.95 (Jul 24) over the past 90 days. Current price is close to the 90-day average of $59.95.
| Date | Price | Change | % Change |
|---|---|---|---|
| $59.95 | $+0.00 | +0.0% | |
| $59.95 | — | — |