First Alert product details

FIRST ALERT BRK SC9120B-3 Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup, White, Pack of 3

Name: FIRST ALERT BRK SC9120B-3 Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup, White, Pack of 3
Brand: First Alert
SKU: B07B4C7MQ6
Price: 123.3 USD
Availability: InStock
Rating: 4.7 (26800 reviews)

The First Alert BRK SC9120B-3 offers essential smoke and carbon monoxide detection with the convenience of battery backup. Ideal for homeowners prioritizing safety, this pack of three ensures comprehensive coverage throughout your home.

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First AlertEasyCheck retailer and product detailsSmoke / CO Detectors

FIRST ALERT BRK SC9120B-3 Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup, White, Pack of 3

Price

$123.30

Rating

4.7 / 5

Reviews

26,800

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Feature Profile

Key features

Highlighted product signals from the available product profile.

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Product Fit

Best-fit signals

Easy

Best For

Primary shopper use-cases identified from product data.

Homeowners looking for reliable smoke and CO detectionFamilies wanting added safety measures

Automation Use Cases

Main needs or product-fit signals this product may support.

Smoke / CO DetectorsSmart Sensors & SafetyFirst AlertFIRST ALERT BRK SC9120B-3 Hardwired Smoke and Carbon Monoxide (CO) Detector with Battery Backup, White, Pack of 3

Ecosystem Fit

Shown only when ecosystem fit is available.

Compatibility should be verified

Install Fit

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Connectivity should be verified

Not Ideal For

Potential mismatch notes when available.

Renters who cannot install hardwired devicesUsers seeking smart features like app connectivity

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Trust Signals

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Last updated: June 9, 2026. Product information can change, so the retailer page is the final source for current price, availability, warranty, subscription, and compatibility details.

Comparison Logic

This page weighs category fit, smart-home use case, compatibility signals, price, rating, review volume, and product profile data.

Original Summary

Summaries are written for shopping clarity from available product data and AI-assisted profile signals, not copied retailer text.

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