---
product_id: 671916709
title: "FireAngel Optical Smoke Alarm - 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: "₩79443"
currency: KRW
in_stock: true
reviews_count: 5
category: "Fireangel"
url: https://www.desertcart.kr/products/671916709-fireangel-optical-smoke-alarm-fa6620-10-year-battery-smoke-alarms
store_origin: KR
region: South Korea
---

# test/silence button for nuisance alarms 10-year sealed lithium battery advanced optical smoke sensing FireAngel Optical Smoke Alarm - 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:** ₩79443
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay ahead of fire risks with 10 years of silent, smart protection!

## Quick Answers

- **What is this?** FireAngel Optical Smoke Alarm - 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?** ₩79443 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/671916709-fireangel-optical-smoke-alarm-fa6620-10-year-battery-smoke-alarms)

## 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

- • **Decade-Long Defense:** 10-year sealed lithium battery means no replacements, no hassle—just peace of mind.
- • **Swift & Simple Setup:** Install in minutes with a twist-and-lock baseplate—perfect for quick home upgrades.
- • **Smoke Detection, Elevated:** Optical sensor 'sees' slow-burning fires early, cutting false alarms from cooking fumes.
- • **Certified Safety Assurance:** CE & UKCA marked, BS EN 14604 certified, backed by a 5-year warranty for trusted reliability.
- • **Silence the Noise, Not Safety:** Test/silence button mutes nuisance alarms for 8 hours without compromising protection.

## Overview

The FireAngel FA6620 Optical Smoke Alarm features an advanced optical sensing chamber that detects slow-burning fires early while minimizing false alarms from cooking fumes. Powered by a sealed 10-year lithium battery, it offers maintenance-free protection for a decade. Easy to install with a twist-lock baseplate, it includes a test/silence button to temporarily mute nuisance alarms without compromising safety. Certified to BS EN 14604 and backed by a 5-year warranty, this smoke alarm delivers reliable, long-lasting home fire protection.

## Description

Designed as a replacement for the Fire Angel ST-622 / ST-620 smoke alarms, the FireAngel FA6620 Optical Smoke Alarm 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.

Review: Arrived well packed & tested & fitted. This is 5th one, 1st 2 lasted around 15 years with the sealed Lithium batteries, really good. This is to replace 1 of replacements as it malfunctioned, but will be replaced/ refunded as 5 year warranty which is great, peace of mind
Review: The FireAngel Optical Smoke Alarm is exactly what I wanted for peace of mind at home. Installation was quick and straightforward, and the instructions were clear. The alarm itself feels solid and well-built, and I like that it uses optical sensing-it seems very responsive without giving false alarms from cooking or steam. The test function is simple to use, and the loud alarm is reassuringly powerful. Battery life appears solid so far, and it gives a clear low-battery warning, which is very helpful. Overall, it’s a reliable, high-quality smoke alarm that provides confidence without fuss. Highly recommended for home safety.

## 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 | B09V5C7GHF |
| ASIN  | B09V5C7GHF |
| Batteries | 1 CR123A batteries required. (included) |
| Batteries  | 1 CR123A batteries required. (included) |
| Batteries Included? | Yes |
| Batteries Required? | Yes |
| Battery Cell Type | Lithium |
| Best Sellers Rank | #21,580 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #32 in Smoke Alarms |
| Color | White |
| Customer Reviews | 4.4 4.4 out of 5 stars (7,216) |
| Customer reviews | 4.4 4.4 out of 5 stars (7,216) |
| Cutting Diameter | 118 Millimeters |
| Date First Available | 1 November 2024 |
| Date First Available  | 1 November 2024 |
| Included components | 1 x Baseplate, 1 x Instruction Manual, 1 x Optical Smoke Alarm complete with Sealed Lithium Battery |
| Installation Method | Install in a matter of minutes with only 2 screws required (not included) to secure the baseplate, then twist the alarm in to place |
| Item Package Quantity | 1 |
| Item Weight | 138 g |
| Item diameter | 118 Millimeters |
| Item model number | FA6620-R |
| Item model number  | FA6620-R |
| Language  | English |
| Manufacturer | FireAngel |
| Manufacturer  | FireAngel |
| Material | Plastic |
| Part number | FA6620-R |
| Pattern | Single |
| Power source type | Battery Powered |
| Product Dimensions  | 11.8 x 11.8 x 3.2 cm; 138 g |
| Shape | Circular |
| Size | Single Pack |
| Style | New Gen Single |

## Product Details

- **Brand:** Fireangel
- **Colour:** White
- **Power source:** Battery Powered
- **Product dimensions:** 3.2D x 11.8W x 11.8H centimeters
- **Style:** New Gen Single

## Images

![FireAngel Optical Smoke Alarm - 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/51WydtnJICL.jpg)
![FireAngel Optical Smoke Alarm - 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 2](https://m.media-amazon.com/images/I/6125WGVoBpL.jpg)
![FireAngel Optical Smoke Alarm - 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 3](https://m.media-amazon.com/images/I/61dFR6z9TIL.jpg)
![FireAngel Optical Smoke Alarm - 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 4](https://m.media-amazon.com/images/I/61kAZNbj8xL.jpg)
![FireAngel Optical Smoke Alarm - 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 5](https://m.media-amazon.com/images/I/61vNO+UIKDL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by A***R on 6 December 2025*

Arrived well packed & tested & fitted. This is 5th one, 1st 2 lasted around 15 years with the sealed Lithium batteries, really good. This is to replace 1 of replacements as it malfunctioned, but will be replaced/ refunded as 5 year warranty which is great, peace of mind

### ⭐⭐⭐⭐⭐ Review
*by M***E on 3 December 2025*

The FireAngel Optical Smoke Alarm is exactly what I wanted for peace of mind at home. Installation was quick and straightforward, and the instructions were clear. The alarm itself feels solid and well-built, and I like that it uses optical sensing-it seems very responsive without giving false alarms from cooking or steam. The test function is simple to use, and the loud alarm is reassuringly powerful. Battery life appears solid so far, and it gives a clear low-battery warning, which is very helpful. Overall, it’s a reliable, high-quality smoke alarm that provides confidence without fuss. Highly recommended for home safety.

### ⭐⭐⭐⭐⭐ Review
*by T***M on 11 December 2025*

I needed reliable smoke alarms for my home that weren't overly expensive, and these fit the bill perfectly. They absolutely deserve 5 stars based on their functionality and value. The installation was incredibly easy, no more annoying 3 AM chirps from a dying battery! The test/silence button is straightforward to use. It’s a smoke detector that does exactly what it's supposed to do. Fantastic value for the price and highly recommended for home safety.

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-01-29*