First Alert product details

First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 6-Pack

Name: First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 6-Pack
Brand: First Alert
SKU: B0DR38F32P
Price: 103.99 USD
Availability: InStock
Rating: 4.6 (2100 reviews)

The First Alert SMI100-AC smoke alarm offers hardwired installation with battery backup, making it a reliable choice for home safety. Ideal for those looking to enhance their smoke detection system with a dependable product.

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First AlertModerateCheck retailer and product detailsSmoke / CO Detectors

First Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 6-Pack

Price

$103.99

Rating

4.6 / 5

Reviews

2,100

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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

Moderate

Best For

Primary shopper use-cases identified from product data.

Homeowners looking for reliable smoke detectionFamilies wanting added safety features

Automation Use Cases

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

Smoke / CO DetectorsSmart Sensors & SafetyFirst AlertFirst Alert SMI100-AC, Hardwire Interconnect Smoke Alarm with Battery Backup, 6-Pack

Ecosystem Fit

Shown only when ecosystem fit is available.

Compatibility should be verified

Install Fit

Shown only when setup or installation fit is available.

Connectivity should be verified

Not Ideal For

Potential mismatch notes when available.

Renters unable to install hardwired devicesUsers seeking portable smoke detectors

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Trust Signals

How to read this product page

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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