---
product_id: 80320779
title: "First Alert CO400 Battery Powered Carbon Monoxide Alarm"
brand: "first alert"
price: "€ 79.16"
currency: EUR
in_stock: true
reviews_count: 5
category: "First Alert"
url: https://www.desertcart.de/products/80320779-first-alert-co400-battery-powered-carbon-monoxide-alarm
store_origin: DE
region: Germany
---

# Electrochemical sensor for top accuracy 85dB alarm ensures you never miss a warning Battery-powered for flexible placement First Alert CO400 Battery Powered Carbon Monoxide Alarm

**Brand:** first alert
**Price:** € 79.16
**Availability:** ✅ In Stock

## Summary

> 🚨 Stay one step ahead with the smartest CO alarm on the block!

## Quick Answers

- **What is this?** First Alert CO400 Battery Powered Carbon Monoxide Alarm by first alert
- **How much does it cost?** € 79.16 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/80320779-first-alert-co400-battery-powered-carbon-monoxide-alarm)

## 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

- • **Loud & Clear Alerts:** 85dB alarm cuts through noise to keep your home and loved ones safe.
- • **Precision Detection:** Advanced electrochemical sensor delivers the most accurate carbon monoxide readings.
- • **Trusted Reliability:** Backed by a 5-year limited warranty and glowing user reviews.
- • **Effortless Safety Setup:** Battery-powered design means no wiring—install anywhere in minutes.
- • **Smart End-of-Life Timer:** Know exactly when it’s time to replace your alarm—no guesswork needed.

## Overview

The First Alert CO400 is a battery-powered carbon monoxide alarm featuring an electrochemical sensor for precise detection, an 85dB alarm for unmistakable alerts, and a user-friendly silence/test button. Its compact design allows easy installation anywhere, supported by a 5-year warranty and an end-of-life timer to ensure continuous protection.

## Description

First Alert CO400 Battery Powered Carbon Monoxide Alarm | CO400 : FIRST ALERT: desertcart.in: Home Improvement

Review: Good Product - I bought five of these and installed them in minutes. I’d recommend this to anyone.
Review: They are essential ! - Good brand and quality and price was good ! Good protection for the house.

## Features

- Battery-operated carbon monoxide alarm
- Uses electrochemical carbon monoxide sensor--the most accurate technology available
- Simple to use silence/test button, low battery warning, end-of-life timer
- 1-9V Battery (included) power source. (NOTE: Product may come with 2 AA batteries. This is the same model.)
- 5 year limited warranty
- Package Contents: 1 Piece Powered Carbon Monoxide Alarm

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000N8OYXI |
| Alarm | Audible |
| Best Sellers Rank | #58,139 in Home Improvement ( See Top 100 in Home Improvement ) #116 in Home Security Alarms |
| Brand | First Alert |
| Built-In Media | 1 Piece Powered Carbon Monoxide Alarm |
| Colour | White |
| Country of Origin | USA |
| Customer Reviews | 4.6 out of 5 stars 17,245 Reviews |
| Enclosure Material | Multi |
| Global Trade Identification Number | 00029054000699 |
| Item Dimensions D x W x H | 2.5D x 12.7W x 7.6H Centimeters |
| Item Highlight | CO400 |
| Item Type Name | First Alert CO400FF Battery Powered Carbon Monoxide Alarm |
| Item Weight | 204 g |
| Manufacturer | Jarden Safety |
| Manufacturer Warranty Description | 5 year warranty |
| Mfr Part Number | CO400 |
| Model Number | CO400 |
| Number of Items | 1 |
| Operating Humidity | 10-95% RH |
| Power Source | Battery Powered |
| Product Dimensions | 2.5D x 12.7W x 7.6H Centimeters |
| Product Style | Simple |
| Sensor Type | Electrochemical |
| Style | Simple |
| UPC | 029054000699 |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** First Alert
- **Style:** Simple
- **Power Source:** Battery Powered
- **Colour:** White
- **Product Dimensions:** 2.5D x 12.7W x 7.6H Centimeters
- **Item Weight:** 0.45 Pounds
- **Alarm:** Audible
- **Operating Humidity:** 10-95% RH
- **Sensor Type:** Electrochemical
- **Global Trade Identification Number:** 00029054000699

## Images

![First Alert CO400 Battery Powered Carbon Monoxide Alarm - Image 1](https://m.media-amazon.com/images/I/51RBX7hitxL.jpg)
![First Alert CO400 Battery Powered Carbon Monoxide Alarm - Image 2](https://m.media-amazon.com/images/I/71hAwlBG2vL.jpg)
![First Alert CO400 Battery Powered Carbon Monoxide Alarm - Image 3](https://m.media-amazon.com/images/I/61iNBAMSOZL.jpg)
![First Alert CO400 Battery Powered Carbon Monoxide Alarm - Image 4](https://m.media-amazon.com/images/I/61JZgbyiECL.jpg)
![First Alert CO400 Battery Powered Carbon Monoxide Alarm - Image 5](https://m.media-amazon.com/images/I/61gHs4yM9gL.jpg)

## Questions & Answers

**Q: Can this detect LPG gas leak ?**
A: Carbon monoxide is a very different gas to natural gas, often created when fuel is burned in the presence of low levels of oxygen. As carbon monoxide is an entirely different composition to natural gas, carbon monoxide detectors will not detect natural gas leaks.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good Product
*by M***E on 26 March 2021*

I bought five of these and installed them in minutes. I’d recommend this to anyone.

### ⭐⭐⭐⭐⭐ They are essential !
*by C***N on 5 February 2024*

Good brand and quality and price was good ! Good protection for the house.

### ⭐⭐⭐⭐⭐ Seems good
*by C***K on 7 November 2017*

Quickly mounted to the wall and put batteries in. Tested. Made beep noises that split eardrums. Due to the battery nature of it it can mount anywhere close to the ground to detect CO quickly. I wont truly know if it works, and I hope I never need to, but appears solid.

## Frequently Bought Together

- First Alert CO400 Carbon Monoxide (CO) Detector, Battery Operated Alarm, 1-Pack
- First Alert CO605 Plug-In Carbon Monoxide Detector with Battery Backup , White
- Kidde Carbon Monoxide Detector, Battery Powered CO Alarm with LEDs, Test-Reset Button, Low Battery Indicator, Portable

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.de/products/80320779-first-alert-co400-battery-powered-carbon-monoxide-alarm](https://www.desertcart.de/products/80320779-first-alert-co400-battery-powered-carbon-monoxide-alarm)

---

*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-10-30*