--- product_id: 56429092 title: "New Kidde FireX KF20 Mains Powered Optical Smoke Alarm Fire Detector with 9V Battery Backup" brand: "ixium" price: "S/.224" currency: PEN in_stock: true reviews_count: 8 category: "I Xium" url: https://www.desertcart.pe/products/56429092-new-kidde-firex-kf20-mains-powered-optical-smoke-alarm-fire store_origin: PE region: Peru --- # 230V mains powered for constant protection 9V battery backup ensures uninterrupted safety Interlinks with other alarms for whole-home alert New Kidde FireX KF20 Mains Powered Optical Smoke Alarm Fire Detector with 9V Battery Backup **Brand:** ixium **Price:** S/.224 **Availability:** ✅ In Stock ## Summary > 🔥 Stay ahead of danger with Kidde’s smart, seamless smoke detection ⚡ ## 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?** S/.224 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/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 and guaranteed reliability. - • **User-Friendly Control:** Combined Test/Hush button lets you easily silence false alarms and verify functionality. - • **Clear Status Indicators:** Built-in LED lights keep you informed of your alarm’s health at a glance. - • **Smart Home Safety Network:** Interlink multiple alarms so one alert triggers them all—never miss a warning. - • **Uninterrupted Fire Defense:** 230V mains power with 9V battery backup keeps you protected day and night. ## 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 whole-home alerts, includes a combined test/hush button for easy maintenance, and is BSI and CE certified, ensuring trusted, reliable fire detection for modern homes. ## 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. Review: Perfect replacement for FireX FADC 230 - Moved house. Had 2 old expired FireX FADC 230’s. Perfect replacement. Simply disconnected plugs and plugged in new devices, even fitted the original base plate. Saved me the cost of getting an electrician out. Great value arrived fast, very happy. Review: Simples! - Very straightforward to replace and fitted existing 'housing' as well so all done in 10 mins - brilliant! ## 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 | 6,473 in DIY & Tools ( See Top 100 in DIY & Tools ) 39 in Smoke Alarms | | Brand | iXium | | Colour | White | | Customer Reviews | 4.5 out of 5 stars 445 Reviews | | Item Dimensions D x W x H | 5.5D x 13.5W x 13.5H centimetres | | Item Weight | 0.32 Kilograms | | Item weight | 0.32 Kilograms | | Manufacturer | iXium | | Part Number | 5055633354711 | | Power source | Battery Powered | | Product Style | Classic | | Product dimensions | 5.5D x 13.5W x 13.5H centimetres | | Sensor Type | ionisation,optical | | Style | Classic | | 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 ## Customer Reviews ### ⭐⭐⭐⭐⭐ Perfect replacement for FireX FADC 230 *by M***. on 16 January 2026* Moved house. Had 2 old expired FireX FADC 230’s. Perfect replacement. Simply disconnected plugs and plugged in new devices, even fitted the original base plate. Saved me the cost of getting an electrician out. Great value arrived fast, very happy. ### ⭐⭐⭐⭐⭐ Simples! *by D***S on 15 March 2026* Very straightforward to replace and fitted existing 'housing' as well so all done in 10 mins - brilliant! ### ⭐⭐⭐⭐⭐ KF10 replacement *by J***L on 8 February 2026* Direct replacement for the older Kidde unit KF10... Fits perfect onto old frame and mains connector block. Very pleased with the item. ## 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 ) --- ## 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.pe/products/56429092-new-kidde-firex-kf20-mains-powered-optical-smoke-alarm-fire](https://www.desertcart.pe/products/56429092-new-kidde-firex-kf20-mains-powered-optical-smoke-alarm-fire) --- *Product available on Desertcart Peru* *Store origin: PE* *Last updated: 2026-08-22*