--- product_id: 380173254 title: "Mains Smoke Alarm - SW1-R Mains Powered Optical Smoke Detector with Backup Battery - Wired, Interlinked Smoke Alarms for Home with Test Button and LED Indicators - White" brand: "fireangel" price: "$48.75" currency: USD in_stock: true category: "Fireangel" url: https://www.desertcart.us/products/380173254-mains-smoke-alarm-sw1-r-mains-powered-optical-smoke-detector store_origin: US region: United States of America --- # Mains powered with 9V battery backup Interlink up to 12 alarms for whole-home coverage Optical sensor detects slow smouldering fires Mains Smoke Alarm - SW1-R Mains Powered Optical Smoke Detector with Backup Battery - Wired, Interlinked Smoke Alarms for Home with Test Button and LED Indicators - White **Brand:** fireangel **Price:** $48.75 **Availability:** βœ… In Stock ## Summary > 🚨 Stay ahead of danger with smart, connected smoke detection! ## Quick Answers - **What is this?** Mains Smoke Alarm - SW1-R Mains Powered Optical Smoke Detector with Backup Battery - Wired, Interlinked Smoke Alarms for Home with Test Button and LED Indicators - White by fireangel - **How much does it cost?** $48.75 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/380173254-mains-smoke-alarm-sw1-r-mains-powered-optical-smoke-detector) ## Best For - fireangel enthusiasts ## Why This Product - Trusted fireangel brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Certified & Long-Lasting:** BS EN 14604:2005 certified with a 10-year lifespan, giving you peace of mind for years to come. - β€’ **Seamless Home-Wide Alerts:** Interconnect up to 12 alarms so every corner of your home sounds the alarm simultaneously. - β€’ **Reliable Power with Backup:** Mains powered for constant protection, plus a replaceable 9V battery ensures safety even during outages. - β€’ **User-Friendly Test & Silence:** Large central button lets you easily test functionality or silence false alarms with a simple press. - β€’ **Advanced Optical Smoke Detection:** Sees smoke early, reducing false alarms and catching slow-burning fires before they spread. ## Overview The FireAngel SW1-R is a mains-powered optical smoke alarm featuring a 9V battery backup for uninterrupted protection. It detects all fire types, especially slow smouldering ones, and can interlink up to 12 alarms for synchronized alerts throughout your home. Equipped with a large test/silence button and LED indicators, it’s BS EN 14604:2005 certified and designed to last 10 years, making it a reliable cornerstone of modern home safety. ## Description SW1-R mains-powered optical smoke alarms are equipped with a 9V backup battery, making it easy and effective to protect your home. In the event of a fire, the alarm emits a loud 85dB sound at 3 metres, accompanied by LED visual indicators. OPTICAL SENSOR: The optical smoke sensing chamber β€˜sees’ smoke as it enters the alarm, reducing the likelihood of false alarms. It is ideal for slow-burning fires that produce thick white smoke. INTERLINK MULTIPLE DEVICES: The SW1-R smoke alarm functions perfectly as a standalone unit but can also be hardwired and interconnected with up to 12 mains-powered smoke (SW1), heat (HW1), or carbon monoxide (CW1) alarms. Once interlinked, all alarms will sound simultaneously if one is triggered, ensuring immediate alerts throughout the home, even from remote areas. TEST/SILENCE BUTTON: To test the device, press the large test button for 5 seconds. A loud, high-pitched sound confirms that the alarm is functioning correctly. In case of a false alarm, press and hold the test button to temporarily silence the alarm for 8 minutes. ## Features - Optical smoke-sensing technology detects all types of fire, including slow smouldering fires - Mains powered with replaceable 9 V battery back-up - Interconnect up to 50 alarms with the RF interlink base rf-burg-wachter-t or hardwire interconnect up to 12 SW1, Hw1 or CW1 alarms - Large central button to test and silence - Certified to BS EN 14604: 2005.Product life span: 10 years, battery life: 1 x 9 V 1 year replaceable battery (Included).Can be used in the hallway, landing, bedroom and living room ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07DLYRPJ4 | | Alarm | Mains smoke alarm with battery back up | | Best Sellers Rank | #45,922 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #67 in Smoke Alarms | | Brand | Fireangel | | Built-In Media | 1x Smoke Alarm + Base Plate, 1x 9V Battery, 2x Screws, 2x Rawl Plugs, 1x Instruction Manual | | Color | White | | Customer Reviews | 4.5 4.5 out of 5 stars (1,977) | | Global Trade Identification Number | 00816317004422 | | Item Dimensions D x W x H | 4.2D x 12.6W x 12.6H centimeters | | Item Type Name | Smoke Alarm | | Item Weight | 220 Grams | | Manufacturer | FireAngel Safety Technology Ltd | | Mfr Part Number | SW1-R | | Model Number | SW1-R | | Number of Items | 1 | | Power Source | Battery Powered | | Product Style | Smoke Alarm | | Sensor Type | Photoelectric | | UPC | 816317004422 | | Unit Count | 1 Count | ## Product Details - **Brand:** Fireangel - **Colour:** White - **Power source:** Battery Powered - **Product dimensions:** 4.2D x 12.6W x 12.6H centimeters - **Style:** Smoke Alarm ## Images ![Mains Smoke Alarm - SW1-R Mains Powered Optical Smoke Detector with Backup Battery - Wired, Interlinked Smoke Alarms for Home with Test Button and LED Indicators - White - Image 1](https://m.media-amazon.com/images/I/51eE8FFR6eL.jpg) ## Available Options This product comes in different **Style** options. ## Frequently Bought Together - FireAngel Mains Smoke Alarm - SW1-R Mains Powered Optical Smoke Detector with Backup Battery - Wired, Interlinked Smoke Alarms for Home with Test Button and LED Indicators - White - FireAngel Carbon Monoxide Alarm and Detector - FA6813 10-Year Sensor Life CO Alarm for Home with AA Batteries - Travel, Portable Carbon Monoxide Detector - CO Detector Monitor with Test Button - FireAngel Heat Alarm for Kitchen with 10 Year Sealed for Life Battery - FA6720-R Heat Detector for Kitchen, Home, Caravan, Attic, Garage - Replacement for HT-630 Heat Alarms - White --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/380173254-mains-smoke-alarm-sw1-r-mains-powered-optical-smoke-detector](https://www.desertcart.us/products/380173254-mains-smoke-alarm-sw1-r-mains-powered-optical-smoke-detector) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-07-11*