US
First Alert

First Alert SMCO100V-AC Hardwired Smoke and CO Alarm 2 Pack

  • 2 alarms, hardwired 120-volt with battery backup
  • Voice alerts name threat and location, up to 11 locations
  • Photoelectric smoke sensing
  • Interconnects with First Alert, Kidde, BRK, FireX
  • UL217 8th Edition, UL2034 4th Edition
  • End-of-life chip indicator
  • 10-year warranty

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

Our verdict

A hardwired smoke and CO alarm pair that tells you what and where the danger is, and links with several brands of existing alarms. Each unit needs a wired circuit to install.

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ASIN: B0FFQ27GCRModel: SMCO100V-ACCategory: Combination Smoke & Carbon Monoxide Detectors

Overview

Homeowners replacing hardwired alarms get units that speak the hazard type and the room it came from. Clip on the universal adapter, mount the bracket, and they join an existing interconnected system from several brands.

Location voice alerts tell everyone where the danger is, and cross brand interconnect avoids replacing a whole system. Installation needs existing alarm wiring, and the smoke standard listed is the older edition.

Who it's for

Larger homes where a hallway alarm may not be heard from far rooms will benefit from voice location. Renters without wiring should use battery models.

Pros and cons

Pros
  • Voice names hazard and location
  • Works with several alarm brands
  • Universal adapters included
  • Battery backup for outages
Cons
  • Requires hardwired circuit
  • Older smoke standard edition listed
  • Location setup takes programming

Performance notes

Early warning across the house depends on the interconnect wiring, and the voice message tells occupants which room to avoid. Photoelectric sensing paired with the maker's detection logic aims to cut cooking nuisance alarms. Battery backup holds coverage when mains power drops.

Specifications

BrandFirst Alert
ModelSMCO100V-AC
Dimensions & fit
Item Dimensions D X W X H5.1"D x 5.1"W x 2.4"H
Item weight2 pounds
Power & efficiency
Power SourceHardwired 120-volt with battery backup
Compatibility & installation
Compatible DevicesFirst Alert, BRK, Kidde, FireX
Included components
Unit Count2 Count
Warranty & support
Manufacturer Warranty Description10-year warranty
Other details
Sensor TypePhotoelectric
AlarmSmoke and CO Alarm, voice and location
Product StylePrecision Detection, smoke and CO
Builtin Media2 AA Batteries per alarm, 2 Mounting Brackets, 2 Wiring harnesses, Easy Adapter Plug
Specification metUL217 8th Edition, UL2034 4th Edition

Frequently asked questions

How do I install the First Alert SMCO100V-AC on existing wiring?

Universal adaptors and wiring harnesses are included for quick installation with existing alarm systems without rewiring.

Will it link with my Kidde alarms?

The listing says it connects with First Alert, Kidde, BRK and FireX alarms.

How many locations can it announce?

It can be programmed for up to 11 locations.

What batteries does it use?

2 AA batteries per alarm are included for backup.