---
product_id: 56429092
title: "New Kidde FireX KF20 Mains Powered Optical Smoke Alarm Fire Detector with 9V Battery Backup"
brand: "ixium"
price: "€ 60.31"
currency: EUR
in_stock: true
category: "I Xium"
url: https://www.desertcart.be/products/56429092-new-kidde-firex-kf20-mains-powered-optical-smoke-alarm-fire
store_origin: BE
region: Belgium
---

# 230V mains powered for constant protection 9V battery backup ensures uninterrupted safety Interlinking alarms for whole-home alert New Kidde FireX KF20 Mains Powered Optical Smoke Alarm Fire Detector with 9V Battery Backup

**Brand:** ixium
**Price:** € 60.31
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay ahead of danger with Kidde’s smart, connected smoke alarm ⚡

## Quick Answers

- **What is this?** New Kidde FireX KF20 Mains Powered Optical Smoke Alarm Fire Detector with 9V Battery Backup by ixium
- **How much does it cost?** € 60.31 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/56429092-new-kidde-firex-kf20-mains-powered-optical-smoke-alarm-fire)

## Best For

- ixium enthusiasts

## Why This Product

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

## Key Features

- • **Trusted Certification:** BSI and CE certified for peace of mind with industry-leading safety standards.
- • **User-Friendly Control:** Combined Test/Hush button lets you easily silence false alarms and verify functionality with a single press.
- • **Sleek & Reliable Design:** Compact, classic white finish fits seamlessly into any modern home décor while delivering robust fire detection.
- • **Smart Interlinked Alerts:** Connect multiple alarms so when one detects danger, all sound—maximizing your family’s response time.
- • **Uninterrupted Fire Safety:** 230V mains power with 9V battery backup means your home is protected even during power outages.

## Overview

The Kidde FireX KF20 is a mains-powered optical smoke alarm featuring a 9V battery backup for continuous protection. It interlinks with other FireX alarms to provide synchronized alerts throughout your home. Equipped with a combined test/hush button and LED indicators, it offers user-friendly operation. Certified by BSI and CE, this reliable device ensures compliance with top safety standards while delivering fast, effective fire detection.

## Description

Protect your home from fires with this 230V mains smoke alarm from Kidde. It uses an ionisation sensor to detect fast-flaming fires and has a built in 9V Alkaline battery as back-up. To test the alarm there is a test/Hush button that allows regular testing of alarm function and can be used to temporarily silence nuisance alarms. There is also an indicator on the alarm to show the alarms current status. If you have more than one of Kiddes FireX mains alarm range these can be interlinked; so if a fire is detected in one room all alarms will sound. This smoke alarm has approval from the BSI (British Standards Institution) and is CE tested and certified.About Kidde Founded by Walter Kidde in 1917, a pioneer in early smoke detection and fire suppression, Kidde is the world’s largest manufacturer of fire safety products. Each day, they work to expand their legacy of innovation, providing advanced solutions to protect people and property from fire and related hazards.

## Features

- 230V Mains Powered Alarm with Battery Backup
- Built in Optical Sensor and LED Indicators
- Interlinks with other FireX Wired Alarms - This means, when all alarms are connected to mains, if one alarm is triggered they will sound
- Combined Test/Hush Button - For silencing nuisance alarms
- BSI and CE Certified

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01B67P0KA |
| Alarm | Visual |
| Best Sellers Rank | 7,531 in DIY & Tools ( See Top 100 in DIY & Tools ) 45 in Smoke Alarms |
| Brand | iXium |
| Colour | White |
| Country of Origin | China |
| Customer Reviews | 4.5 4.5 out of 5 stars (456) |
| Item Dimensions D x W x H | 5.5D x 13.5W x 13.5H centimetres |
| Item Weight | 0.32 Kilograms |
| Manufacturer | iXium |
| Part Number | 5055633354711 |
| Power source | Battery Powered |
| Product Style | Classic |
| Sensor Type | ionisation,optical |
| Unit Count | 1.0 count |

## Product Details

- **Alarm:** Visual
- **Brand:** iXium
- **Colour:** White
- **Item weight:** 0.32 Kilograms
- **Manufacturer:** iXium
- **Power source:** Battery Powered
- **Product dimensions:** 5.5D x 13.5W x 13.5H centimetres
- **Sensor type:** ionisation,optical
- **Style:** Classic
- **Unit count:** 1.0 count

## Images

![New Kidde FireX KF20 Mains Powered Optical Smoke Alarm Fire Detector with 9V Battery Backup - Image 1](https://m.media-amazon.com/images/I/71iRBt2Xn2L.jpg)

## Questions & Answers

**Q: Ionisation or optical?  The title says optical but the description says ionisation!**
A: Must have been a cut and paste job... KF20 is optical and that was what I received. :-)

**Q: Can this alarm be connected with the KF10 already installed**
A: Yes it can, you will need to do this be running wires to each alarm you wish to interconnect or you will need the wireless template called the RF-SFTP for each alarm then will be interconnected

**Q: Please could you tell me the diameter of the mounting plate as it will be replacing old alarms. Thanks**
A: No sorry as I just swapped it with the same one

**Q: What is the diameter of this alarm ?**
A: The KF20 dimensions are:
Alarm Dimensions 127 x 127 x 39mm
Bracket Dimensions 133 x 133 x 6mm

## Frequently Bought Together

- New Kidde FireX KF20 Mains Powered Optical Smoke Alarm Fire Detector with 9V Battery Backup
- Kidde Firex KF3 ( Mains/Battery Heat alarm )

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*Product available on Desertcart Belgium*
*Store origin: BE*
*Last updated: 2026-10-25*