---
product_id: 701783899
title: "First Alert SMCO210, 10-Year Sealed Battery Combination Smoke & Carbon Monoxide Alarm with Slim Profile Design, 1-Pack"
brand: "first alert"
price: "€ 80.51"
currency: EUR
in_stock: true
reviews_count: 5
category: "First Alert"
url: https://www.desertcart.nl/products/701783899-first-alert-smco210-10-year-sealed-battery-combination-smoke-carbon
store_origin: NL
region: Netherlands
---

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

**Brand:** first alert
**Price:** € 80.51
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** First Alert SMCO210, 10-Year Sealed Battery Combination Smoke & Carbon Monoxide Alarm with Slim Profile Design, 1-Pack by first alert
- **How much does it cost?** € 80.51 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/701783899-first-alert-smco210-10-year-sealed-battery-combination-smoke-carbon)

## 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: This is my second purchase. Works great and no battery wories for 10 years
Review: Very easy to install, I’ve used this brand for years.

## 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 |
| ASIN  | B0CJMMVST2 |
| Batteries | 1 Product Specific batteries required. (included) |
| Batteries  | 1 Product Specific batteries required. (included) |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Lithium |
| Best Sellers Rank | #24,200 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #10 in Smoke & Carbon Monoxide Alarms |
| Color | White |
| Customer Reviews | 4.1 4.1 out of 5 stars (1,326) |
| Customer reviews | 4.1 4.1 out of 5 stars (1,326) |
| Date First Available | 9 January 2024 |
| Date First Available  | 9 January 2024 |
| Department  | Unisex-Adult |
| Item Package Quantity | 1 |
| Item Weight | 181 g |
| Item model number | SMCO210 |
| Item model number  | SMCO210 |
| Manufacturer | Resideo |
| Manufacturer  | Resideo |
| Material | Plastic |
| Part number | SMCO210 |
| Pattern | SMCO210 |
| Power source type | Battery Powered |
| Product Dimensions | 14.4 x 14.4 x 2.54 cm; 181 g |
| Product Dimensions  | 14.4 x 14.4 x 2.54 cm; 181 g |
| Size | 1-Pack |
| 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

![First Alert 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

### ⭐⭐⭐⭐⭐ Review
*by H***S on 12 January 2026*

This is my second purchase. Works great and no battery wories for 10 years

### ⭐⭐⭐⭐⭐ Review
*by M***. on 15 January 2026*

Very easy to install, I’ve used this brand for years.

### ⭐ Review
*by B***B on 2 November 2025*

If I could give these no stars I would. I purchased 2 of these in Feb to replace some old wired smoke detectors. Install was easy. The trouble came in Sept when one of them started to malfunction and give an alarm all the time when there was no smoke or heavy fumes. Nothing. Also it was not a CO alarm but a smoke. At all hours of the day and night. I finally got so sick of it that I pulled it off the ceiling and wrapped it in a blanket as my poor dog was shaking violently every time it went off. Put it back up a week later. Same problem. So I tossed it. Now here we are in Nov and the other one I bough is doing the same thing. Going off for no reason. Even wrapped in a blanket it was still going off. So I put it out on the porch. With fresh air and everything. And it continued to go off sitting outside intermittently for 2 more days before it too went in the trash. We are of course outside the return window. So I spent $80 to not have any smoke detectors in the house and will have to shell out more money again to buy another brand. These werent old. Both had been up less then 9 months when they malfunctioned. Dont waste your money on these unless you like your pets being traumatized at 2am when the thing randomly goes off for no reason and wont stop.

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-22*