---
product_id: 603106939
title: "First Alert 10-Year Battery Combination Smoke & Carbon Monoxide Alarm"
brand: "first alert"
price: "9153 kr"
currency: ISK
in_stock: true
reviews_count: 8
category: "First Alert"
url: https://www.desertcart.is/products/603106939-first-alert-10-year-battery-combination-smoke-and-carbon-monoxide
store_origin: IS
region: Iceland
---

# Slim profile design, half the depth of standard alarms 10-year sealed battery life Precision Detection tech reduces false alarms First Alert 10-Year Battery Combination Smoke & Carbon Monoxide Alarm

**Brand:** first alert
**Price:** 9153 kr
**Availability:** ✅ In Stock

## Summary

> 🔒 Protect smarter, live safer — 10 years of worry-free security!

## Quick Answers

- **What is this?** First Alert 10-Year Battery Combination Smoke & Carbon Monoxide Alarm by first alert
- **How much does it cost?** 9153 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/603106939-first-alert-10-year-battery-combination-smoke-and-carbon-monoxide)

## 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

- • **Sleek & Subtle:** Modern slim profile fits discreetly on your ceiling or wall without disrupting your home’s aesthetic.
- • **End-of-Life Alert:** Stay ahead with timely notifications when it’s time to upgrade your safety device.
- • **Dual Threat Defense:** Integrated smoke and carbon monoxide detection in one sleek, easy-to-install unit.
- • **Decade-Long Peace of Mind:** Forget battery changes with a 10-year sealed power source that keeps you protected effortlessly.
- • **Smart Sensing, Less Nuisance:** Advanced Precision Detection technology minimizes false alarms, so your nights stay uninterrupted.

## Overview

The First Alert SMCO210 is a combination smoke and carbon monoxide alarm featuring advanced Precision Detection technology to reduce false alarms. It boasts a 10-year sealed battery eliminating the hassle of replacements and low battery chirps. Its slim profile design is half the depth of standard alarms, offering discreet yet reliable 2-in-1 protection with an end-of-life warning to ensure continuous home safety.

## Description

The First Alert SMCO210 10-Year Sealed Battery Combination Smoke & Carbon Monoxide Alarm with Slim Profile Design uses First Alert's Precision Detection advanced sensing technology and meets new industry standards. This 2-in-1 alarm provides convenient protection against both fire and carbon monoxide (CO). Also equipped with a 10-year sealed battery to eliminate the need for battery replacements and low battery chirps.

Review: I buy again - Work as it should has a 10 year battery after 10 years the detector will stop working
Review: Do not buy! False alarms lasting 2 minutes. Absolute nightmare. - I bought 5 of these when I moved into a home I bought a couple of years ago. On 3 different occasions, 3 different fire alarms had false alarms. These false alarms last 2 minutes and in my case occurred in the middle of the night. On many occasions, my wife and I would wake up in abject horror. Adrenaline dumping into our system as I jump up and try to find the source of the sound. As soon as I run downstairs it stops. I check around the house. Check the other smoke alarms, calm down and go to bed. Only to be woken up again in an hour. Finally, I figured out that these first alert alarms are the issue. The fun part is they are sealed and cant be turned off. So how do you stop them from keeping you up? No other solution but a hammer. You take it off the wall and bring it outside and break it in a million pieces. After realizing that these are garbage, I threw away 4 of them. But I forget the 5th one which was in the basement, in a room with a c02/smoke alarm from a better company. Sure enough, 2 years later, at 2:30am the piece of junk goes off for two minutes then goes silent. I just out of bed in horror, unable to find it before it stops. After the second time, i realize the sound is coming from the basement. I go down there and see that stupid first alert logo looking at me and realize that I have forgotten this last unit was year when I smashed the others two years ago. So I break out the old hammer and put it out of mine and its misery. To be clear- I have several redundant c02/smoke alarms from other companies in the house that havent gone off. So this is not a case of there being c02 or smoke that I have missed. These are just garbage. I have never written a bad review on desertcart. Just this one. To say that I will never touch another first alert product in my life doesnt come close to the animosity I have for this product.

## Features

- First Alert's 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.
- Provides reliable 2-in-1 protection against both smoke and carbon monoxide in an easy to install alarm
- 10-Year sealed battery eliminates battery replacements and low battery chirps for the life of the alarm
- End-of-life warning lets you know when it’s time to replace the alarm
- Slim profile design is half the depth of a standard alarm

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CJMMVST2 |
| Alarm | Combination Alarm |
| Best Sellers Rank | #1,480 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #7 in Smoke & Carbon Monoxide Alarms |
| Brand | First Alert |
| Color | White |
| Customer Reviews | 3.7 out of 5 stars 1,726 Reviews |
| Enclosure Material | Plastic |
| Item Dimensions D x W x H | 5.67"D x 5.67"W x 1"H |
| Item Highlight | SMCO210 Slim Profile Design, Sealed Battery |
| Item Type Name | Combination Alarm |
| Item Weight | 6.56 ounces |
| Manufacturer | Resideo |
| Manufacturer Warranty Description | Warranty |
| Mfr Part Number | SMCO210 |
| Model Number | SMCO210 |
| Number of Items | 1 |
| Operating Humidity | 10-95% RH |
| Power Source | Battery Powered |
| Product Dimensions | 5.67"D x 5.67"W x 1"H |
| Product Style | Precision Detection |
| Sensor Type | Photoelectric |
| Style | Precision Detection |
| UPC | 029054022233 |
| Unit Count | 1 Count |

## Product Details

- **Alarm:** Combination Alarm
- **Brand:** First Alert
- **Color:** White
- **Item Weight:** 6.56 ounces
- **Material:** Plastic
- **Operating Humidity:** 10-95% RH
- **Power Source:** Battery Powered
- **Product Dimensions:** 5.67"D x 5.67"W x 1"H
- **Sensor Type:** Photoelectric
- **Style:** Precision Detection

## Images

![First Alert 10-Year Battery Combination Smoke & Carbon Monoxide Alarm - Image 1](https://m.media-amazon.com/images/I/6133EaBjygL.jpg)

## Available Options

This product comes in different **Pattern, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ I buy again
*by T***R on May 17, 2026*

Work as it should has a 10 year battery after 10 years the detector will stop working

### ⭐ Do not buy! False alarms lasting 2 minutes. Absolute nightmare.
*by T***M on August 13, 2025*

I bought 5 of these when I moved into a home I bought a couple of years ago. On 3 different occasions, 3 different fire alarms had false alarms. These false alarms last 2 minutes and in my case occurred in the middle of the night. On many occasions, my wife and I would wake up in abject horror. Adrenaline dumping into our system as I jump up and try to find the source of the sound. As soon as I run downstairs it stops. I check around the house. Check the other smoke alarms, calm down and go to bed. Only to be woken up again in an hour. Finally, I figured out that these first alert alarms are the issue. The fun part is they are sealed and cant be turned off. So how do you stop them from keeping you up? No other solution but a hammer. You take it off the wall and bring it outside and break it in a million pieces. After realizing that these are garbage, I threw away 4 of them. But I forget the 5th one which was in the basement, in a room with a c02/smoke alarm from a better company. Sure enough, 2 years later, at 2:30am the piece of junk goes off for two minutes then goes silent. I just out of bed in horror, unable to find it before it stops. After the second time, i realize the sound is coming from the basement. I go down there and see that stupid first alert logo looking at me and realize that I have forgotten this last unit was year when I smashed the others two years ago. So I break out the old hammer and put it out of mine and its misery. To be clear- I have several redundant c02/smoke alarms from other companies in the house that havent gone off. So this is not a case of there being c02 or smoke that I have missed. These are just garbage. I have never written a bad review on amazon. Just this one. To say that I will never touch another first alert product in my life doesnt come close to the animosity I have for this product.

### ⭐⭐⭐⭐⭐ Good product
*by J***N on August 21, 2026*

Works like a charm

## Frequently Bought Together

- First Alert SMCO210, 10-Year Sealed Battery Combination Smoke & Carbon Monoxide Alarm with Slim Profile Design, 1-Pack
- First Alert SM210, 10-Year Sealed Battery Smoke Alarm with Slim Profile Design, 1-Pack
- First Alert Smoke Alarm, Battery-Operated Detector with Test & Silence Button, SMI100, 1-Pack

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-09-23*