First Alert 9120B 2pk G, Battery Hardwired Smoke Alarm, 2 Pieces
First Alert 9120B 2pk G, Battery Hardwired Smoke Alarm, 2 Pieces
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First Alert

First Alert 9120B 2pk G, Battery Hardwired Smoke Alarm, 2 Pieces

4.5 stars out of 53 reviews
(4.5)|
53 ratings

Key item features

  • Advanced Detection: Smoke alarm with advanced smoke detection technologies
  • Easy Operation: Single button for easy testing and silencing
  • Alarm Identification: Latching alarm indicator to identify which unit initiated an alarm
  • Simple Installation: Perfect mount design for straightforward installation
  • Safety Compliance: Meets new construction requirements for safety compliance
  • Versatile Mounting: Orientation options for wall or ceiling mounting
  • Reliable Power: Battery with 9 Volt battery backup and 120 Volts for reliable performance
  • Pack of Two: Includes 2 smoke alarms in one pack
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Current price is $59.09
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Customer ratings & reviews

4.5 out of 5 stars
stars53 ratings27 reviews
How item rating is calculated
  1. 5 stars81% (43)
  2. 4 stars9% (5)
  3. 3 stars0% (0)
  4. 2 stars0% (0)
  5. 1 star9% (5)

Reviews summary

Pros
  • : Installation is possible with existing wires.
  • : Offers affordable options.
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Showing 1-3 of 27 reviews

Dec 2, 2025
rwautoman
Sold and shipped byTop Rated Seller.
5 out of 5 stars review

Verified Purchase

Smart Purchase

I had to replace one in my house and it was exactly the same model. It works like it should and I was pleased with the price in purchasing two and having one for a spare.

Helpful?4Q04CEFREHRS652676799
Nov 13, 2024
Jane
Sold and shipped byTop Rated Seller.
5 out of 5 stars review

Verified Purchase

‘ arrive just in time for the annual smoke alarm battery check. These 10-year warranted hardwired alarms were just what I needed to replace mine that were more than 10 years old! 😬 The alarm is nice and loud, so I would be alerted if a fire broke out!

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Helpful?4Q04CEFREHRS652676799
Dec 7, 2024
Tracy
Sold and shipped byTop Rated Seller.
5 out of 5 stars review

Verified Purchase

Easy to install with current wires

Our house came with these already installed. After 8 years, they needed replaced. Since the wiring was already connected to our house, all we had to do was clip to current wires.

Incentivized Review
Helpful?4Q04CEFREHRS652676799