A round white smoke alarm with a test button and speaker grille, shown beside a matching round light unit with a small bulb.

BRK First Alert SMI100-AC Hardwired Smoke Alarm w/ Battery Backup

by First Alert

$117.00, see price history

Price is what the vendor listed when last checked. Confirm it with the vendor before buying.

Setup with instructions Written instructions are enough for most families to install this and get it working. The quick-connect plug avoids rewiring, but you still work with household electrical wiring and need to link and test the alarms. Someone comfortable with that can do it in about half an hour, or a licensed electrician can do it.

What it is

Summary

AI-generated from vendor-published content · October 1, 2026

This hardwired smoke alarm wires into your home's electrical system and keeps working on battery backup during a power outage. It comes with a SLED177 strobe light, so a fire warning is flashing light as well as sound, which helps if you can't rely on hearing a standard alarm. It links with up to 12 other First Alert/BRK detectors and 6 other compatible devices, so when one alarm sounds, all of them do. An indicator also shows which unit set off the alarm. It includes a quick-connect plug, so you don't need to rewire, but it does need to be tied into your home's wiring.

Getting it

Try before you buy

Devices like this are often available to borrow through your state's AT Act program — typically free or low-cost — so you can try it before buying or pursuing funding.

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Where to get it

Diglo Visit
$117.00

This is the vendor WhatCanHelp tracks for this product — it may also be available from other retailers or a local supplier, and prices vary.

How to fund this

These are common places to ask about paying for equipment like this. Each one decides its own eligibility and what it covers, so start by asking them.

All funding programs, state by state →

Details

Quick Facts Catalog facts · auto-generated
Type
Addresses
Platform
Age range
Complexity
Setup with instructions
Price
$117.00
Funding
  • AT Act lending
  • Medicaid waiver
  • Out of pocket

What setup looks like

  • With a guide
    1. Turn off power to the circuit at the breaker, then take down the old alarm and unplug its connector.
    2. Plug the included quick-connect plug into the wiring, attach the mounting bracket, and mount the new alarm.
    3. Install the backup battery, connect the strobe light, restore power, and press the test button. Plan on about 30 minutes per alarm.
    4. If you link several alarms, test them all to confirm they sound together.

Sources & fine print

Vendor facts (name, price, platforms, vendor link) sourced from Diglo — view on vendor site (opens in a new tab); last checked October 31, 2026.

Classification & description AI-generated from vendor-published content on October 1, 2026 · confidence: high. Vendor specs may lag; verify before relying on details in a clinical or funding artifact.

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