---
product_id: 701783899
title: "SMCO210, 10-Year Sealed Battery Combination Smoke & Carbon Monoxide Alarm with Slim Profile Design, 1-Pack"
brand: "first alert"
price: "56266CFA"
currency: XOF
in_stock: true
reviews_count: 5
category: "First Alert"
url: https://www.desertcart.sn/products/701783899-smco210-10-year-sealed-battery-combination-smoke-and-carbon-monoxide
store_origin: SN
region: Senegal
---

# Slim profile, half the depth of standard alarms 10-year sealed battery, zero replacements Precision Detection tech reduces false alarms SMCO210, 10-Year Sealed Battery Combination Smoke & Carbon Monoxide Alarm with Slim Profile Design, 1-Pack

**Brand:** first alert
**Price:** 56266CFA
**Availability:** ✅ In Stock

## Summary

> 🚨 Stay ahead of danger with style and zero hassle!

## Quick Answers

- **What is this?** SMCO210, 10-Year Sealed Battery Combination Smoke & Carbon Monoxide Alarm with Slim Profile Design, 1-Pack by first alert
- **How much does it cost?** 56266CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/701783899-smco210-10-year-sealed-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

- • **Smart Sensing:** Advanced Precision Detection minimizes nuisance alarms from cooking
- • **Sleek & Subtle:** Modern slim design blends seamlessly with any décor
- • **End-of-Life Alert:** Timely replacement warning keeps your protection uninterrupted
- • **Set & Forget Power:** 10-year sealed lithium battery eliminates annoying low-battery chirps
- • **Dual Threat Defense:** 2-in-1 smoke & CO alarm for comprehensive home safety

## Overview

The First Alert SMCO210 combines cutting-edge Precision Detection technology with a decade-long sealed lithium battery, delivering reliable 2-in-1 smoke and carbon monoxide protection in a sleek, slim-profile design. Engineered to reduce false alarms and eliminate battery maintenance, it’s the smart, hassle-free choice for millennial professionals prioritizing safety and modern aesthetics.

## 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: Voice With Alarm is Great Combo - Voice with alarm tone is great. The test button yields 3 successive beeps plus a verbal alert for smoke and 4 successive beeps plus verbal for carbon monoxide. I'm happy that I paid extra for voice. The unit with voice is the same form factor as the non-voice unit SMCO210 and will make for an easy upgrade. The BRK version is made by Resideo as is the First Alert branded unit. Only the box is different.
Review: I buy again - Work as it should has a 10 year battery after 10 years the detector will stop working

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | First Alert |
| Colour | White |
| Item weight | 186 g |
| Power source | Battery Powered |
| Product dimensions | 14.4D x 14.4W x 2.5H centimeters |
| Style | Smoke, CO |

## Product Details

- **Brand:** First Alert
- **Colour:** White
- **Power source:** Battery Powered
- **Product dimensions:** 14.4D x 14.4W x 2.5H centimeters
- **Style:** Smoke, CO

## Images

![SMCO210, 10-Year Sealed Battery Combination Smoke & Carbon Monoxide Alarm with Slim Profile Design, 1-Pack - Image 1](https://m.media-amazon.com/images/I/6133EaBjygL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Voice With Alarm is Great Combo
*by C***N on 6 May 2026*

Voice with alarm tone is great. The test button yields 3 successive beeps plus a verbal alert for smoke and 4 successive beeps plus verbal for carbon monoxide. I'm happy that I paid extra for voice. The unit with voice is the same form factor as the non-voice unit SMCO210 and will make for an easy upgrade. The BRK version is made by Resideo as is the First Alert branded unit. Only the box is different.

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

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

### ⭐⭐⭐⭐⭐ Smoke detector
*by A***Y on 28 May 2026*

Easy to install

## Frequently Bought Together

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- First Alert Smoke Alarm, Battery-Operated Detector with Test & Silence Button, SMI100, 1-Pack

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**Shop now:** [https://www.desertcart.sn/products/701783899-smco210-10-year-sealed-battery-combination-smoke-and-carbon-monoxide](https://www.desertcart.sn/products/701783899-smco210-10-year-sealed-battery-combination-smoke-and-carbon-monoxide)

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-06-21*