First Alert SMICO100-AC Hardwire Smoke and CO Alarm
- Smoke and carbon monoxide in one alarm
- 3 alarms in the pack
- Hardwired, corded electric power
- 9V battery and easy adapter plug listed
- Ionization sensor, Precision Detection style
- 1.7 pounds, white
Last refreshed Sep 8, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A three pack of hardwired dual hazard alarms, each with a battery backup. The listing gives no interconnect or wiring detail.
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ASIN: B0CLVQF7MCModel: SMICO100-ACCategory: Carbon Monoxide Detectors
Overview
Sensing smoke and carbon monoxide in a single white housing, this First Alert combination alarm runs on house wiring through an easy adapter plug and holds a nine volt battery as backup. It ships as a pack of three.
Its strength is covering two hazards with one device per room position, with backup power for outages. The limitation is a thin data sheet: sensor type is given only as ionization, and no linking, voice alert or lifespan is listed.
Who it's for
Houses with wired alarm locations that need several replacements at once are the best match. Renters and anyone with only a battery alarm setup should look at a plug free model.
Pros and cons
- Smoke and carbon monoxide in one
- Three alarms per pack
- Battery backup included
- Hardwired mains power
- Interconnect not listed
- Carbon monoxide sensor type unstated
Performance notes
House power runs the device and the battery covers outages, so the backup needs routine testing. An ionization sensor responds quickly to flaming fires, while the carbon monoxide channel is a separate function whose sensor type is not stated.
Specifications
| Brand | First Alert |
|---|---|
| Model | SMICO100-AC |
| Dimensions & fit | |
| Item weight | 1.7 pounds |
| Power & efficiency | |
| Power Source | Corded electric |
| Construction & materials | |
| Color | White |
| Included components | |
| Unit Count | 3 |
| Other details | |
| Sensor Type | Ionization |
| Alarm | Smoke, CO |
| Product Style | Precision Detection |
| Builtin Media | Easy adapter plug, 9V battery |
| Item Type Name | Combination alarm |
| Item Highlight | SMICO100-AC |
Closest rivals on specs
Kidde Hardwired Smoke and Carbon Monoxide Detector- Item Weight 1.7 vs 1 pounds (+70%)
Kidde Hardwired Carbon Monoxide Detector with Battery Backup- Item Weight 1.7 vs 0.8 pounds (+112%)
Kidde 30CUDR Smoke and CO Detector 18 Pack- Item Weight 1.7 vs 2.6 pounds (-35%)
Frequently asked questions
Will the First Alert SMICO100-AC fit my existing alarm wiring?
The listing says hardwire with an easy adapter plug but names no compatible brands or connector types. Compare the plug with your current wiring or ask the seller before ordering.
Does the SMICO100-AC work without battery power?
The listing gives corded electric power with a 9V battery, so mains is the main supply. The battery is for backup during outages.
How many alarms come in the SMICO100-AC pack?
Three. The listing gives a unit count of 3.