---
product_id: 312449708
title: "First Alert Battery-Powered Carbon Monoxide Alarm CO400"
brand: "joyswag"
price: "R$472"
currency: BRL
in_stock: true
category: "Smoke Alarm"
url: https://www.desertcart.com.br/products/312449708-first-alert-battery-powered-carbon-monoxide-alarm-co400
store_origin: BR
region: Brazil
---

# First Alert Battery-Powered Carbon Monoxide Alarm CO400

**Brand:** joyswag
**Price:** R$472
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** First Alert Battery-Powered Carbon Monoxide Alarm CO400 by joyswag
- **How much does it cost?** R$472 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/312449708-first-alert-battery-powered-carbon-monoxide-alarm-co400)

## Best For

- joyswag enthusiasts

## Why This Product

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

## Description

The First Alert CO400 Carbon Monoxide Alarm utilizes an electrochemical carbon monoxide sensor that lasts for up to five years to detect carbon monoxide. This carbon monoxide detector is battery powered, making it portable and easy to use anywhere, even in the event of a power outage. When carbon monoxide levels become elevated, a loud 85-decibel alarm alerts you to the threat. The Most Accurate CO Sensor Available: The First Alert Carbon Monoxide Alarm uses an advanced electrochemical CO sensor to detect elevated carbon monoxide levels. When CO is detected, the carbon monoxide detector sounds an alarm to warn you of the threat. Comprehensive Warning Features: When carbon monoxide levels rise, the carbon monoxide detector sounds an 85-decibel siren that is designed to wake even the soundest of sleepers. A low-battery light and alarm alert you when battery power is running low, and an end-of-life timer lets you know when the device should be replaced. Each CO detector lasts approximately five years. Simple and Easy to Use: The First Alert Carbon Monoxide Alarm is easy to set up. Simply insert the battery, and the CO detector will start to monitor your space for carbon monoxide. There are no complicated displays or settings to navigate. A single button silences the alarm and tests the CO detector. A pull-down action chart instructs you of what to do if the CO alarm goes off. Where To Place Carbon Monoxide Alarms: One on every level of the home and one in each sleeping area. Specifications:  Battery operated, 9V battery included. Mute button, mutes unnecessary alarms. also tests alarm function with same button. Low battery signal mute, quiets low battery signal for up to 8 hours. Electrochemical sensor, most accurate technology available for detecting carbon monoxide* *compared to other common sensing technologies. End of life timer, alarm chirps when it is time to replace it. 9V battery included. Loud 85db alarm. Meets UL2034 standard. Emits T3 Pattern. 5 Year Limited Warranty. Product Dimensions (LxWxH): 3.4 x 1.5 x 5 in. Product Weight: .7 lbs.

## Images

![First Alert Battery-Powered Carbon Monoxide Alarm CO400 - Image 1](https://cdn.shopify.com/s/files/1/0542/0226/9881/products/Basic_Battery_Operated_Carbon_Monoxide_Alarm_CO400__78166.1601652002.1280.1280_4358b635-7771-4636-81b2-46419d48483e.jpg?v=1618791090)
![First Alert Battery-Powered Carbon Monoxide Alarm CO400 - Image 2](https://cdn.shopify.com/s/files/1/0542/0226/9881/products/Basic_Battery_Operated_Carbon_Monoxide_Alarm_CO400-1__05219.1601652002.1280.1280_7d4b781e-1bf4-4b79-90b4-9e153741efd6.jpg?v=1618791090)
![First Alert Battery-Powered Carbon Monoxide Alarm CO400 - Image 3](https://cdn.shopify.com/s/files/1/0542/0226/9881/products/Basic_Battery_Operated_Carbon_Monoxide_Alarm_CO400-2__20630.1601652002.1280.1280_eb943045-74ce-45d2-9e8c-0cebd61df177.jpg?v=1618791090)
![First Alert Battery-Powered Carbon Monoxide Alarm CO400 - Image 4](https://cdn.shopify.com/s/files/1/0542/0226/9881/products/Basic_Battery_Operated_Carbon_Monoxide_Alarm_CO400-3__13443.1601652002.1280.1280_5718b9f2-e148-4f8d-bd00-51703665773d.jpg?v=1618791090)
![First Alert Battery-Powered Carbon Monoxide Alarm CO400 - Image 5](https://cdn.shopify.com/s/files/1/0542/0226/9881/products/Basic_Battery_Operated_Carbon_Monoxide_Alarm_CO400__78166.1601652002.386.513_f0ae33fd-6209-4e72-9362-92ae96ad1911.jpg?v=1618791090)

---

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-02-23*