---
product_id: 659824221
title: "Meross Carbon Monoxide Detector, Dual Sensor Smoke and Carbon Monoxide alarm, Smoke Alarm for home with Test/Silence Button, 10-Year Battery Smoke Alarm, 85dB Fire Alarm, EN 14604 & EN 50291 Standard"
brand: "meross"
price: "HK$550"
currency: HKD
in_stock: true
url: https://www.desertcart.hk/products/659824221-meross-carbon-monoxide-detector-dual-sensor-smoke-and-carbon-monoxide
store_origin: HK
region: Hong Kong
---

# 10-year built-in battery 2-in-1 dual sensor tech DIY install in 5 mins Meross Carbon Monoxide Detector, Dual Sensor Smoke and Carbon Monoxide alarm, Smoke Alarm for home with Test/Silence Button, 10-Year Battery Smoke Alarm, 85dB Fire Alarm, EN 14604 & EN 50291 Standard

**Brand:** meross
**Price:** HK$550
**Availability:** ✅ In Stock

## Summary

> 🚨 Stay ahead of danger with smart, silent protection that lasts a decade!

## Quick Answers

- **What is this?** Meross Carbon Monoxide Detector, Dual Sensor Smoke and Carbon Monoxide alarm, Smoke Alarm for home with Test/Silence Button, 10-Year Battery Smoke Alarm, 85dB Fire Alarm, EN 14604 & EN 50291 Standard by meross
- **How much does it cost?** HK$550 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/659824221-meross-carbon-monoxide-detector-dual-sensor-smoke-and-carbon-monoxide)

## Best For

- meross enthusiasts

## Why This Product

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

## Key Features

- • **Effortless Setup:** No electrician needed—mount on wall or ceiling in under 5 minutes with included hardware.
- • **Loud & Clear Alerts:** 85dB alarm ensures your whole home hears the warning, with a handy silence/test button for control.
- • **Dual Sensor Precision:** Photoelectric smoke + electrochemical CO sensors work independently to catch threats fast and reduce false alarms.
- • **Decade-Long Peace of Mind:** Built-in 10-year battery means zero hassle and constant protection without replacements.
- • **Certified Safety Standards:** Complies with EN 14604 & EN 50291 for trusted, professional-grade fire and CO detection.

## Overview

The Meross Carbon Monoxide Detector combines advanced dual sensors for smoke and CO detection with a 10-year built-in battery, ensuring reliable, maintenance-free safety. Its user-friendly design and quick DIY installation make it an essential, certified device (EN 14604 & EN 50291) for any modern home, delivering loud 85dB alerts and smart LED indicators to keep you and your family protected effortlessly.

## Description

Carbon Monoxide Detector, Dual Sensor Smoke and Carbon Monoxide alarm, Smoke Alarm for home with Test/Silence Button, 10-Year Battery Smoke Alarm, 85dB Fire Alarm, EN 14604 & EN 50291 Standard

## Features

- 2-in-1 Function: The photoelectric smoke detector and electrochemical CO sensor work independently of each other. If the carbon-monoxide-detector detects both smoke and carbon monoxide, it sounds first for smoke and then for CO. The CO detector detects both fast and slow-burning fires, minimising false alarms.
- 10-Year Service Life: The smoke alarm and carbon monoxide detector contains one built-in 3V CR123A battery (not removable) that can last 10 years. You can avoid the trouble of replacing the battery, and it ensures your carbon monoxide alarm is always ready to protect.
- User-Friendly Design: The light and simple white round design ensures the carbon monoxide detector blends seamlessly into your home. The carbon monoxide and smoke detector includes a test/silence button (please press the test button monthly to confirm the working status of the smoke alarm). The fire alarm sound is over 85dB at 3 metres and sounds throughout your home; press the test button to silence.
- High-Tech: This carbon monoxide and smoke detector has an inbuilt smart chipset. The carbon monoxide alarm is automatically activated when it is attached to the bracket. The LED light is normally green and turns red in an emergency. The smoke alarm for home complies with EN 14604 and EN 50291 standards to ensure reliable quality.
- Easy Installation: The battery-operated smoke detector (not wired) can be installed by yourself in 5 minutes without the need for an electrician. The CO alarm is easy to mount on any wall or ceiling with the included screws. Note: Carbon monoxide is lighter than air, so it is recommended to install it at a distance of 30 cm from the ceiling.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | meross |
| Part Number | CS11 |
| Product Dimensions | 2.8 x 12 x 12 cm; 135 g |
| Batteries | 1 CR123A batteries required. (included) |
| Item model number | CS11 |
| Size | 1 Pack |
| Colour | White |
| Style | Smoke & CO Detector |
| Power Source | Battery Powered |
| Item Package Quantity | 1 |
| Included Components | 1 x Combination Smoke and Carbon Monoxide Detectors 1 x Mounting Bracket 1 x Screw Kit 1 x User Manual |
| Batteries included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Lithium Ion |
| Item Weight | 135 g |

## Product Details

- **Brand:** meross
- **Style:** Smoke & CO Detector
- **Power source:** Battery Powered
- **Colour:** White
- **Product dimensions:** 2.8D x 12W x 12H centimetres
- **Item weight:** 135 Grams
- **Number of items:** 1
- **Manufacturer:** meross

## Images

![Meross Carbon Monoxide Detector, Dual Sensor Smoke and Carbon Monoxide alarm, Smoke Alarm for home with Test/Silence Button, 10-Year Battery Smoke Alarm, 85dB Fire Alarm, EN 14604 & EN 50291 Standard - Image 1](https://m.media-amazon.com/images/I/61AOrhOOnUL.jpg)

## Available Options

This product comes in different **Size Name, Style Name** options.

## Frequently Bought Together

- meross CS11 Safty Alarm, White, 1 Pack
- Meross Interlinked WiFi Smoke Alarm, Smoke Detector with Hub, Low Battery Alert Silence Button, Wireless Smoke Alarms for Home, Replaceable Battery, Apple HomeKit, SmartThings Supported, 2.4GHz Only

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**Shop now:** [https://www.desertcart.hk/products/659824221-meross-carbon-monoxide-detector-dual-sensor-smoke-and-carbon-monoxide](https://www.desertcart.hk/products/659824221-meross-carbon-monoxide-detector-dual-sensor-smoke-and-carbon-monoxide)

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-01-22*