--- product_id: 670372067 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" brand: "fireangel" price: "266.10 DT" currency: TND in_stock: true category: "Fireangel" url: https://www.desertcart.tn/products/670372067-optical-smoke-alarm-2-pack-fa6620-10-year-battery-smoke store_origin: TN region: Tunisia --- # Optical smoke sensing tech Test/silence button for nuisance alarms 10-year sealed battery life 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 **Brand:** fireangel **Price:** 266.10 DT **Availability:** ✅ In Stock ## Summary > 🔥 Stay ahead of fire threats with smart, silent, decade-long protection! ## 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 by fireangel - **How much does it cost?** 266.10 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/670372067-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 - • **Effortless Setup:** Twist-and-lock installation with removable baseplate makes upgrading or replacing a breeze. - • **Silent Peace Mode:** Instantly mute nuisance alarms for 8 hours with the test/silence button—sleep easy, stay safe. - • **Smart Smoke Vision:** Advanced optical sensor detects slow-burning fires fast while cutting false alarms from cooking fumes. - • **Decade-Long Defense:** Set it and forget it with a 10-year sealed lithium battery—no replacements, no hassle. - • **Certified Safety Assurance:** CE & UKCA marked, BS EN 14604 certified, backed by a 5-year warranty for trusted protection. ## Overview The FireAngel Optical Smoke Alarm 2-Pack (FA6620) features cutting-edge optical sensing technology for rapid detection of slow-burning fires, paired with a 10-year sealed lithium battery for maintenance-free safety. Designed to minimize false alarms from cooking fumes, it includes a convenient test/silence button to mute nuisance alerts temporarily. Easy to install with a twist-lock baseplate, this certified smoke alarm offers reliable, long-lasting home protection backed by a 5-year warranty. ## Description Designed as a replacement for the Fire Angel ST-622 / ST-620 smoke alarms, the FireAngel FA6620 Optical Smoke Alarm (available as a twin pack) is fitted with a 10-year lifetime sealed battery and equipped with an optical sensing chamber, providing a fast response to slow-burning fires. ENHANCED SENSING The optical smoke sensing chamber works by 'seeing' smoke as it enters the alarm—making it perfect for slow-burning fires with thick white smoke and less prone to false alerts from cooking fumes. It can still be subject to nuisance false alarms from steam and should not be placed near bathrooms or kitchens. SLEEP EASY If a low battery alert occurs at night, you can silence the smoke detector for 8 hours by pressing the test button. The alarm will be muted, but the red LED will continue to flash. The alarm will still detect smoke during Sleep Easy mode. Replace within 30 days. TEST/SILENCE To test your device, press the large test button for 5 seconds. A loud, high-pitched sound will verify the alarm is functioning correctly. During a known false alarm, press the test button for 5 seconds to temporarily silence the alarm for 8 minutes. ## 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 | |---------------|-------| | ASIN | B09W9WXBZL | | ASIN | B09W9WXBZL | | Alarm | Smoke Alarm | | Batteries | 2 CR123A batteries required. (included) | | Best Sellers Rank | #12,630 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #12 in Smoke Alarms | | Brand | Fireangel | | Built-In Media | 1 x Instruction Manual, 2 x Baseplate, 2 x Optical Smoke Alarms complete with Sealed Batteries | | Color | White | | Customer Reviews | 4.4 4.4 out of 5 stars (4,619) | | Customer reviews | 4.4 4.4 out of 5 stars (4,619) | | Date First Available | 19 July 2024 | | Enclosure Material | Plastic | | Item Dimensions D x W x H | 11.8D x 11.8W x 3.2H centimeters | | Item Type Name | Smoke Alarm | | Item Weight | 138 Grams | | Item model number | FA6620-R-T2 | | Language | English | | Manufacturer | FireAngel | | Manufacturer | FireAngel | | Mfr Part Number | FA6620-R-T2 | | Model Number | FA6620-R-T2 | | Number of Items | 2 | | Power Source | Battery Powered | | Product Dimensions | 11.8 x 11.8 x 3.2 cm; 138 g | | Product Style | New Gen Twin Pack | | Sensor Type | Photoelectric | | UPC | 816317006327 | | Unit Count | 2 Count | ## Product Details - **Brand:** Fireangel - **Colour:** White - **Power source:** Battery Powered - **Product dimensions:** 11.8D x 11.8W x 3.2H centimeters - **Style:** New Gen Twin Pack ## 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 - Image 1](https://m.media-amazon.com/images/I/51uAIAFZJrL.jpg) ## Available Options This product comes in different **Size** options. ## 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.tn/products/670372067-optical-smoke-alarm-2-pack-fa6620-10-year-battery-smoke](https://www.desertcart.tn/products/670372067-optical-smoke-alarm-2-pack-fa6620-10-year-battery-smoke) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-06-01*