--- product_id: 422676184 title: "Optical Smoke Alarm 2-Pack - FA6620 10-Year Battery Smoke Alarms for Home with Test/Silence Button - Replacement for FireAngel ST-622/ST-620 - Early Smoke Detector Fire Alarm - White | 2-Pack, 10-Year Battery Smoke Alarm Detector, Replacing FireAngel ST-622/ST-620, Fire Alarms for Home" brand: "fireangel" price: "₨1063" currency: SCR in_stock: true reviews_count: 9 url: https://www.desertcart.sc/products/422676184-optical-smoke-alarm-2-pack-fa6620-10-year-battery-smoke store_origin: SC region: Seychelles --- # 11.8 cm compact design 10-year sealed battery life Easy push-twist installation Optical Smoke Alarm 2-Pack - FA6620 10-Year Battery Smoke Alarms for Home with Test/Silence Button - Replacement for FireAngel ST-622/ST-620 - Early Smoke Detector Fire Alarm - White | 2-Pack, 10-Year Battery Smoke Alarm Detector, Replacing FireAngel ST-622/ST-620, Fire Alarms for Home **Brand:** fireangel **Price:** ₨1063 **Availability:** ✅ In Stock ## Summary > 🔥 Stay ahead of danger with FireAngel’s decade of silent vigilance! ## Quick Answers - **What is this?** Optical Smoke Alarm 2-Pack - FA6620 10-Year Battery Smoke Alarms for Home with Test/Silence Button - Replacement for FireAngel ST-622/ST-620 - Early Smoke Detector Fire Alarm - White | 2-Pack, 10-Year Battery Smoke Alarm Detector, Replacing FireAngel ST-622/ST-620, Fire Alarms for Home by fireangel - **How much does it cost?** ₨1063 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sc](https://www.desertcart.sc/products/422676184-optical-smoke-alarm-2-pack-fa6620-10-year-battery-smoke) ## 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 - • **Seamless Replacement:** Fits existing ST-622/ST-620 mounts for instant upgrade without rewiring. - • **Swift & Simple Setup:** Push, twist, and secure with included screws—no electrician needed. - • **Precision Smoke Sensing:** Advanced optical sensor detects slow-burning fires fast, cutting false alarms. - • **Decade-Long Peace of Mind:** Sealed 10-year battery means zero hassle, zero replacements. - • **Certified Safety Assurance:** CE & UKCA marked with 5-year warranty for trusted home protection. ## Overview The FireAngel FA6620 2-Pack Optical Smoke Alarms deliver reliable, early fire detection with a 10-year sealed battery and advanced optical sensors that minimize false alarms. Designed for easy installation and direct replacement of older models, these alarms come certified with CE and UKCA marks and include a 5-year warranty, ensuring your home stays protected effortlessly for a full decade. ## Description At FireAngel, we're dedicated to protecting and improving our customers’ lives by creating innovative, cutting-edge fire safety technology that is both practical and accessible. The FireAngel FA6620-R Optical Smoke Alarm has been designed to make protecting your home simple, with an easy installation process, fewer false alarms, and rigorous testing. Designed to replace the ST-622 and ST-620 smoke alarms, the baseplate is identical to the ST-622, making replacements quick and easy. FireAngel: Smarter solutions for safer homes. What should I do if my smoke alarm sounds? In the event of a smoke alarm sounding: About Us We pride ourselves on product reliability and quality. Since 1998, we’ve deployed over 80 million safety products, protecting over 25 million homes nationwide. Sustainability We’re committed to reducing our impact on the planet; that’s why we've reduced the plastic in our packaging and have unique products that use less energy. The FireAngel range In addition to our smoke alarms for the home, we offer a wide range of other safety products designed to protect you and your family. Choose from smart and wireless devices, as well as standard fire, carbon monoxide (CO), and heat alarms. ## Features - SMOKE DETECTORS FOR HOME: The optical smoke alarm makes protecting your home simple. Its optical sensing chamber 'sees' smoke as it enters the alarm, providing a fast response to slow burning fires with thick white smoke. - FEWER NUISANCE ALARMS: The advanced optical sensor ensures the FireAngel smoke alarm is less prone to false alerts from cooking fumes. Avoid placing near bathrooms or kitchens. - 10-YEAR BATTERY: Each smoke alarm is fitted with a 10-year sealed battery, offering protection for the lifetime of the device without needing to change the batteries. - EASY INSTALLATION: Fitted with a removable base plate, secure it to the ceiling using the screws provided. Push and twist to secure the device. The base plate is identical to the ST622, making replacements quick and easy. - SAFETY ASSURED: The FA6620 smoke alarm holds CE and UKCA marks and is certified to BS EN 14604:2005+AC:2008. Suitable for domestic premises, including leisure accommodation vehicles, it comes with a 5-year warranty. ## Technical Specifications | Specification | Value | |---------------|-------| | Alarm | Smoke Alarm | | Asin | B09W9WXBZL | | Best Sellers Rank | 31 in DIY & Tools (See Top 100 in DIY & Tools) 1 in Smoke Alarms | | Brand | Fireangel | | Colour | White | | Country Of Origin | China | | Customer Reviews | 4.3 4.3 out of 5 stars (12,700) 4.3 out of 5 stars | | Included Components | 1 x Instruction Manual, 2 x Baseplate, 2 x Optical Smoke Alarms complete with Sealed Batteries | | Item Dimensions D X W X H | 11.8D x 11.8W x 3.2H centimetres | | Item Type Name | Smoke Alarm | | Item Weight | 138 Grams | | Manufacturer | FireAngel | | Manufacturer Warranty Description | 5 year manufacturer's warranty. | | Material | Plastic | | Model Number | FA6620-R-T2 | | Number Of Items | 2 | | Part Number | FA6620-R-T2 | | Power Source | Battery Powered | | Product Style | New Gen Twin Pack | | Sensor Type | Photoelectric | | Unit Count | 2.0 count | | Upc | 816317006327 | ## Product Details - **Brand:** Fireangel - **Style:** New Gen Twin Pack - **Power source:** Battery Powered - **Colour:** White - **Product dimensions:** 11.8D x 11.8W x 3.2H centimetres - **Item weight:** 138 Grams - **Alarm:** Smoke Alarm - **Sensor type:** Photoelectric - **Material:** Plastic - **Number of items:** 1 ## Images ![Optical Smoke Alarm 2-Pack - FA6620 10-Year Battery Smoke Alarms for Home with Test/Silence Button - Replacement for FireAngel ST-622/ST-620 - Early Smoke Detector Fire Alarm - White | 2-Pack, 10-Year Battery Smoke Alarm Detector, Replacing FireAngel ST-622/ST-620, Fire Alarms for Home - Image 1](https://m.media-amazon.com/images/I/51uAIAFZJrL.jpg) ## Available Options This product comes in different **Size Name** options. ## Questions & Answers **Q: Will this fit the SO -610 base plate** A: My previous one was so-610 and I fitted the new one onto that base **Q: Will this alarm detect vape smoke** A: Generally no vaping will not trigger the smoke alarm, unless you purposely blow the vape into the alarm. This does depend how sensitive your alarm is though. Some smoke detectors are that sensitive that even a steam iron will set it off. **Q: Is it jog proof and will it read cd-r's?** A: It’s a smoke detector that fits securely to the house ceiling with no movement. Nothing to do with a cd-r involved in installation. **Q: Hi, will this work with 5GHz / full fibre broadband Wifi?** A: I don’t think so, as to my knowledge it’s not Wi-Fi enabled ## Customer Reviews ### ⭐⭐⭐⭐⭐ Thoughtful design *by on Reviewed in the United Kingdom 10 August 2026* Ordered in the morning, arrived on the same evening.We already had Fire Angel sealed units up, fitted by the fire brigade 8 years ago. The one at the top of the stairs started giving occasional false alarms. I put this down to occasionally getting steam from the adjacent bathroom. Not a problem after 8 years.I bought the replacements and was delighted to see that despite the design changing over time, the wall plate they fit to has remained the same. Simple installation, quarter turn to get the old one off, quarter turn to put the new one on.I wouldn’t buy any other type ### ⭐⭐⭐⭐⭐ Do the job *by on Reviewed in the United Kingdom 6 July 2026* So far so good. They seem to be working fine. Easy to install, they look ok, are not too obvious or oversized. they do react when I burn the toast (which is more often than it should be) so that gives me some peace of mind. ### ⭐⭐⭐⭐ Smoke alarm *by on Reviewed in the United Kingdom 12 August 2026* Works ok ## Frequently Bought Together - FireAngel Optical Smoke Alarm 2-Pack - FA6620 10-Year Battery Smoke Alarms for Home with Test/Silence Button - Replacement for FireAngel ST-622/ST-620 - Early Smoke Detector Fire Alarm - 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 with 10 Year Sealed For Life Battery, FA6720-R (HT-630 replacement, new gen), White --- ## 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.sc/products/422676184-optical-smoke-alarm-2-pack-fa6620-10-year-battery-smoke](https://www.desertcart.sc/products/422676184-optical-smoke-alarm-2-pack-fa6620-10-year-battery-smoke) --- *Product available on Desertcart Seychelles* *Store origin: SC* *Last updated: 2026-08-20*