---
product_id: 52450657
title: "4MCO Carbon Monoxide Alarm - Hard Wired - Mains Powered - 230v"
brand: "kidde"
price: "R2827"
currency: ZAR
in_stock: true
url: https://www.desertcart.co.za/products/52450657-4mco-carbon-monoxide-alarm-hard-wired-mains-powered-230v
store_origin: ZA
region: South Africa
---

# LED & digital display 7-year lithium battery End of life warning 4MCO Carbon Monoxide Alarm - Hard Wired - Mains Powered - 230v

**Brand:** kidde
**Price:** R2827
**Availability:** ✅ In Stock

## Summary

> 🔒 Breathe Easy with Kidde - Your Safety, Our Priority!

## Quick Answers

- **What is this?** 4MCO Carbon Monoxide Alarm - Hard Wired - Mains Powered - 230v by kidde
- **How much does it cost?** R2827 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/52450657-4mco-carbon-monoxide-alarm-hard-wired-mains-powered-230v)

## Best For

- kidde enthusiasts

## Why This Product

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

## Key Features

- • **Smart Monitoring:** LED display shows alarm state, power supply status, and low battery alerts.
- • **User-Friendly Design:** Choose between standard LED or advanced digital display options.
- • **Interconnected Safety:** Digital display provides early warnings of CO levels and alerts for interconnected alarms.
- • **Lightweight & Compact:** Weighing only 360g, it fits seamlessly into any home environment.
- • **Stay Alert, Stay Safe!:** Mains powered with a reliable 7-year rechargeable lithium battery.

## Overview

The Kidde 4MCO Carbon Monoxide Alarm is a hard-wired, mains-powered safety device equipped with a 7-year sealed rechargeable lithium battery. It features an LED display for real-time monitoring of alarm states and CO levels, ensuring your home remains a safe haven. With options for standard or digital displays, this alarm is designed for both functionality and ease of use.

## Description

4MCO Carbon Monoxide Alarm - Hard Wired - Mains Powered - 230v

## Features

- Mains powered with 7 year sealed rechargeable lithium back-up battery
- Provides end of life warning when the alarm has reached the end of it's life
- LED display indicates alarm state, power supply status and low battery
- Digital display provides early warning of intermittent and low CO levels and shows FIRE or CO when interconnected with other Kidde alarms
- Option to have standard LED or digital display

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Kidde |
| Part Number | 423/9HIR |
| Product Dimensions | 15.01 x 14.61 x 5.59 cm; 360 g |
| Batteries | 1 Product Specific batteries required. |
| Manufacturer reference | 423/9HIR |
| Style | Classic |
| Power Source | Battery Powered |
| Item Package Quantity | 1 |
| Batteries included? | No |
| Batteries Required? | No |
| Battery Cell Type | Lithium |
| Item Weight | 360 g |

## Product Details

- **Brand:** Kidde
- **Style:** Classic
- **Power source:** Battery Powered
- **Alarm:** Audible
- **Sensor type:** Carbon Monoxide Sensor
- **Manufacturer:** Kidde
- **UPC:** 047871061020

## Images

![4MCO Carbon Monoxide Alarm - Hard Wired - Mains Powered - 230v - Image 1](https://m.media-amazon.com/images/I/51aAEWjNiSL.jpg)
![4MCO Carbon Monoxide Alarm - Hard Wired - Mains Powered - 230v - Image 2](https://m.media-amazon.com/images/I/81yQMJCYYnL.jpg)

## Questions & Answers

**Q: Is this compatible with other brand alarms ie aico fire alarm?**
A: Yes, check interlink colours

**Q: do all mains carbon monoxide smoke deteters have battery back up**
A: Yes,because they would not work during power cuts.

**Q: Is the 4cmo10 a direct replacement for the older model 4cmd10 with an led readout?**
A: Yes check interlink colours

**Q: Does this fit onto the kidde smk4896 surface pattress?**
A: No, the SMK4896 is not suitable for this alarm. You will need to purchase the SMK23RU for this alarm and the link is as follows:

https://www.amazon.co.uk/dp/B00IUNED66

## Frequently Bought Together

- Kidde 4MCO Carbon Monoxide Alarm - Hard Wired - Mains Powered - 230v
- Kidde Firex KF20 Optical Smoke Alarm - Mains Operated with Battery Back Up
- Kidde Firex KF Series Mains Powered Fire Alarms Kit (2 Smoke & 1 Heat) with Alkaline Back-up Battery

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**Shop now:** [https://www.desertcart.co.za/products/52450657-4mco-carbon-monoxide-alarm-hard-wired-mains-powered-230v](https://www.desertcart.co.za/products/52450657-4mco-carbon-monoxide-alarm-hard-wired-mains-powered-230v)

---

*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-02-02*