---
product_id: 603744197
title: "First Alert Hardwire Combination Smoke & Carbon Monoxide Alaram | SMICO105-AC, 10 Year Battery Backup"
brand: "first alert"
price: "$305.30"
currency: USD
in_stock: true
category: "First Alert"
url: https://www.desertcart.us/products/603744197-first-alert-hardwire-combination-smoke-and-carbon-monoxide-alaram-smico105
store_origin: US
region: United States of America
---

# 10-Year Battery Backup Interconnect Early Warning Precision Detection tech First Alert Hardwire Combination Smoke & Carbon Monoxide Alaram | SMICO105-AC, 10 Year Battery Backup

**Brand:** first alert
**Price:** $305.30
**Availability:** ✅ In Stock

## Summary

> 🚨 Stay ahead of danger with smart, seamless protection!

## Quick Answers

- **What is this?** First Alert Hardwire Combination Smoke & Carbon Monoxide Alaram | SMICO105-AC, 10 Year Battery Backup by first alert
- **How much does it cost?** $305.30 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/603744197-first-alert-hardwire-combination-smoke-and-carbon-monoxide-alaram-smico105)

## Best For

- first alert enthusiasts

## Why This Product

- Trusted first alert brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Quick Connect Plug:** Effortless installation with no rewiring needed—upgrade your safety without the hassle.
- • **10-Year Battery Backup:** Continuous protection even during power outages—set it and forget it for a decade.
- • **Visual Alarm Indicator:** Easily identify which unit triggered the alert, speeding up your response time.
- • **Interconnected Safety Network:** When one alarm sounds, all compatible units alert you instantly—whole-home security in sync.
- • **Precision Detection Technology:** Advanced sensors reduce false alarms from cooking, so your peace of mind stays uninterrupted.

## Overview

The First Alert SMICO105-AC is a 3-pack combination smoke and carbon monoxide alarm featuring advanced Precision Detection technology to minimize false alarms, a 10-year battery backup for uninterrupted safety, and interconnect capability that links all compatible alarms for whole-home early warning. Designed for easy installation with a Quick Connect Plug and equipped with a visual alarm indicator, it ensures reliable, hassle-free protection that meets the latest industry standards.

## Description

Install convenient 2-in-1 protection against both smoke and carbon monoxide with the First Alert SMICO105-AC Interconnect Hardwire Combination Smoke & Carbon Monoxide Alarm with 10-Year Battery Backup. Meets new industry standards and can interconnect with other compatible alarms to create a whole home safety network to help provide an early warning.

## Features

- First Alerts Precision Detection advanced sensing technology complies with new industry standards to reduce cooking nuisance alarms and provides early warning in the event of a home fire emergency
- 10-Year battery backup provides continuous protection during power outages
- Through early warning interconnect, when one alarm sounds, all compatible
- Quick Connect Plug allows for easy installation with no need to rewire
- Alarm indicator visually identifies the unit that initiated the alarm

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CJLHXBJS |
| Best Sellers Rank | #12,546 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #31 in Smoke & Carbon Monoxide Alarms |
| Brand | First Alert |
| Built-In Media | Easy Adapter Plug |
| Color | White |
| Customer Reviews | 4.6 4.6 out of 5 stars (300) |
| Item Type Name | Combination Alarm |
| Item Weight | 0.66 Pounds |
| Manufacturer | Resideo |
| Mfr Part Number | SMICO105-AC |
| Model Number | SMICO105-AC |
| Number of Items | 3 |
| Operating Humidity | 10-95% RH |
| Power Source | Corded Electric |
| Product Style | Smoke, CO |
| Sensor Type | Ionization |
| UPC | 029054022875 |

## Product Details

- **Brand:** First Alert
- **Color:** White
- **Item Weight:** 0.66 Pounds
- **Manufacturer:** Resideo
- **Number of Items:** 3
- **Operating Humidity:** 10-95% RH
- **Power Source:** Corded Electric
- **Sensor Type:** Ionization
- **Style:** Smoke, CO
- **UPC:** 029054022875

## Images

![First Alert Hardwire Combination Smoke & Carbon Monoxide Alaram | SMICO105-AC, 10 Year Battery Backup - Image 1](https://m.media-amazon.com/images/I/715u0TY1WBL.jpg)

## Available Options

This product comes in different **Size** options.

## Frequently Bought Together

- First Alert SMICO105-AC, Interconnect Hardwire Combination Smoke & Carbon Monoxide Alarm with 10-Year Battery Backup, 3-Pack
- First Alert SMI105-AC, Interconnect Hardwire Smoke Alarm with 10-Year Battery Backup, 1-Pack
- First Alert SMICO100-AC Interconnect Hardwire Combination Smoke & Carbon Monoxide Alarm with Battery Backup, 1-Pack

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-27*