US
First Alert

BRK SMICO105-AC Hardwired Smoke and CO Alarm 6 Pack

  • 6 alarms per pack
  • Smoke and carbon monoxide combination
  • Ionization smoke sensor
  • 10-Year battery backup
  • Hardwired with Quick Connect Plug
  • Interconnect with compatible alarms

Updated 5 days ago · Based on the Amazon listing and published specifications, not hands-on testing.

Our verdict

A six pack of hardwired smoke and CO combination alarms with sealed ten year backup, built to replace an existing interconnected system quickly. It uses an ionization sensor and the listing gives no voice or warranty detail.

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ASIN: B0FCFMH8MSModel: SMICO105-ACCategory: Combination Smoke & Carbon Monoxide Detectors

Overview

Hallways and bedrooms already wired for alarms are where these First Alert combination units go. Each one plugs into the existing harness with an adapter, senses smoke and carbon monoxide, and sounds every linked alarm when one trips.

Homeowners replacing a whole hardwired system get six units with long life backup batteries that do not need yearly changes. Sensor choice is ionization, and voice alerts, standards edition and warranty are not stated.

Who it's for

Owners of houses with hardwired alarm circuits who want smoke and CO coverage in each unit will save installation time. Homes without wiring need battery only units.

Pros and cons

Pros
  • Six alarms in one pack
  • Smoke and CO in each unit
  • Long life battery backup
  • Plugs into existing wiring
Cons
  • Ionization sensor only
  • No voice alerts mentioned
  • Warranty not listed

Performance notes

Whole home warning depends on the interconnect wiring, which sets off every linked alarm when one detects danger. Backup power from the sealed battery maintains protection during outages. Cooking nuisance alarms are reduced by the sensing logic the maker describes.

Specifications

BrandFirst Alert
ModelSMICO105-AC
Dimensions & fit
Item Dimensions D X W X H12"D x 6"W x 6"H
Item weight3 pounds
Power & efficiency
Power SourceHardwired with 10-Year battery backup
Construction & materials
ColorWhite
Included components
Unit Count6 Count
Other details
Sensor TypeIonization
AlarmAudible, visual alarm indicator
Product StyleSmoke, CO
Builtin MediaEasy Adapter Plug
Mfr Part NumberSMICO105-AC

Frequently asked questions

Do the First Alert SMICO105-AC alarms work without household wiring?

They are hardwired alarms with a 10-Year battery backup for outages. They are designed to plug into existing alarm wiring.

How many alarms are in the pack?

Six.

Do I need to rewire to replace old alarms?

The Quick Connect Plug allows installation with no need to rewire.

Can I tell which alarm went off?

Yes. An alarm indicator identifies the unit that initiated the alarm.