---
product_id: 432041137
title: "FireAngel Optical Smoke Alarm 2-Pack - FA6615-R 10-Year Smoke Alarms for Home with 5-Year Batteries - Smoke Detector Fire Alarm - ST-625 Replacement"
brand: "fireangel"
price: "324.53 DT"
currency: TND
in_stock: true
reviews_count: 13
category: "Fireangel"
url: https://www.desertcart.tn/products/432041137-fireangel-optical-smoke-alarm-2-pack-fa6615-r-10-year
store_origin: TN
region: Tunisia
---

# 5-year pre-installed batteries Quick twist & fit baseplate 10-year smoke detection lifespan FireAngel Optical Smoke Alarm 2-Pack - FA6615-R 10-Year Smoke Alarms for Home with 5-Year Batteries - Smoke Detector Fire Alarm - ST-625 Replacement

**Brand:** fireangel
**Price:** 324.53 DT
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay ahead of danger with decade-long, hassle-free fire safety!

## Quick Answers

- **What is this?** FireAngel Optical Smoke Alarm 2-Pack - FA6615-R 10-Year Smoke Alarms for Home with 5-Year Batteries - Smoke Detector Fire Alarm - ST-625 Replacement by fireangel
- **How much does it cost?** 324.53 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/432041137-fireangel-optical-smoke-alarm-2-pack-fa6615-r-10-year)

## 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

- • **False Alarm Fighter:** Advanced sensor reduces nuisance alerts from cooking fumes
- • **Hassle-Free Battery Life:** Pre-installed 5-year batteries mean no mid-term replacements
- • **Certified Safety Assurance:** CE & UKCA marked, EN 14604:2005+AC:2008 certified for peace of mind
- • **Decade-Long Fire Protection:** Reliable 10-year optical smoke sensing for early fire alerts
- • **Swift & Simple Installation:** Twist-to-fit baseplate compatible with multiple FireAngel models

## Overview

The FireAngel Optical Smoke Alarm 2-Pack (FA6615-R) offers cutting-edge optical smoke detection with a 10-year lifespan and 5-year pre-installed alkaline batteries. Designed to minimize false alarms, it installs effortlessly via a twist-and-lock baseplate compatible with previous FireAngel models. Certified to the highest UK and European safety standards, this twin pack ensures reliable, long-term protection for your home or leisure vehicle.

## Description

Free delivery and returns on all eligible orders. Shop FireAngel Optical Smoke Alarm 2-Pack - FA6615-R 10-Year Smoke Alarms for Home with 5-Year Batteries - Smoke Detector Fire Alarm - ST-625 Replacement.

Review: Great - Great products & easy to assemble with a good price tag too.
Review: Top Rated... but - These are top rated for sensitivity to all types of fires by Which magazine, beating the competition, mainly Aico, even though Aico are several times the cost. The downside with FireAngel is false alarms which are widely reported. Industry people prefers Aico as they dont want hassle. My plan is to buy several extra FireAngels, and immediately bin and replace any that give a false alarm, no second chances, and by Darwinism achieve a reliable system. The included battery is useless, bin and replace with Duracell 9V MN1604.

## Features

- SMOKE DETECTORS FOR HOME: The optical smoke alarm’s sensing chamber 'sees' smoke as it enters, enabling a fast response to slow-burning fires with thick white smoke.
- FEWER NUISANCE ALARMS: The advanced optical sensor ensures the fire alarm is less prone to false alerts from cooking fumes. Avoid placing near bathrooms or kitchens.
- EASY TO FIT: Attach the removable baseplate to the ceiling. Insert the batteries, and push and twist the alarm to secure. The baseplate is identical to FireAngel smoke alarms ST-622, ST-620, and ST-750, making replacements quick and easy.
- SAFETY ASSURED: The FA6615 Fire Angel smoke alarm holds CE and UKCA marks and is certified to EN 14604:2005+AC:2008. It is suitable for domestic properties and leisure accommodation vehicles and includes a 5-year warranty.
- FIREANGEL HOME SAFETY: We offer a wide range of safety products designed to protect you and your family. Choose from smart and wireless devices, as well as standard smoke, heat, and carbon monoxide alarms.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09WB3FQNK |
| Alarm | Smoke Alarm |
| Best Sellers Rank | 372 in DIY & Tools ( See Top 100 in DIY & Tools ) 3 in Smoke Alarms |
| Brand | Fireangel |
| Colour | White |
| Customer Reviews | 4.5 4.5 out of 5 stars (15,111) |
| Included Components | 1 x Instruction Manual, 2 x Baseplate, 2 x Optical Smoke Alarms, 4 x AA Batteries |
| Item Dimensions D x W x H | 10D x 10W x 10H millimetres |
| Item Type Name | Smoke Alarm |
| Item Weight | 185 Grams |
| Manufacturer | FireAngel |
| Manufacturer Warranty Description | 5 year manufacturer's warranty. |
| Material | Plastic |
| Model Number | FA6615-R-T2 |
| Number of Items | 2 |
| Part Number | FA6615-R-T2 |
| Power source | Battery Powered |
| Product Style | 5 Year Replaceable Battery (Better) |
| Sensor Type | Photoelectric |
| UPC | 816317006341 |
| Unit Count | 2.0 count |

## Product Details

- **Alarm:** Smoke Alarm
- **Brand:** Fireangel
- **Colour:** White
- **Item weight:** 185 Grams
- **Material:** Plastic
- **Power source:** Battery Powered
- **Product dimensions:** 10D x 10W x 10H millimetres
- **Sensor type:** Photoelectric
- **Style:** 5 Year Replaceable Battery (Better)
- **Unit count:** 2.0 count

## Images

![FireAngel Optical Smoke Alarm 2-Pack - FA6615-R 10-Year Smoke Alarms for Home with 5-Year Batteries - Smoke Detector Fire Alarm - ST-625 Replacement - Image 1](https://m.media-amazon.com/images/I/51iqUjgQxSL.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Questions & Answers

**Q: Do these fire alarms activate eachother when one goes off? Need one inside sound proof room and one outside thanks**
A: Good Morning, 
These are standalone alarms so they will not link in with any other unit. 
If you are looking for units that will trigger each other in the even of a fire, then our Pro Connected range will be more suited. 

Many Thanks,
Gemma

**Q: Are these suitable for the new Scottish legislation**
A: Good Morning 
The TST-625R alarm is a standalone unit and therefore cannot be interlinked with any other product. 
If you are looking for units which can be interlinked with each other then I would recommend the FireAngel Pro Connected range. 
Many Thanks
Gemma

**Q: Will this fit the baseplate for the old si-601?**
A: Yes, this unit will fit onto your existing base plate. 
Many Thanks
Gemma

**Q: How loud is the alarm in term of db ?**
A: DB unknown but very loud and as loud as any other alarm I've had over the last 40 years.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great
*by C***E on 7 April 2026*

Great products & easy to assemble with a good price tag too.

### ⭐⭐⭐⭐⭐ Top Rated... but
*by J***D on 18 January 2026*

These are top rated for sensitivity to all types of fires by Which magazine, beating the competition, mainly Aico, even though Aico are several times the cost. The downside with FireAngel is false alarms which are widely reported. Industry people prefers Aico as they dont want hassle. My plan is to buy several extra FireAngels, and immediately bin and replace any that give a false alarm, no second chances, and by Darwinism achieve a reliable system. The included battery is useless, bin and replace with Duracell 9V MN1604.

### ⭐⭐⭐⭐ Worked out of the box, cat not included
*by K***E on 4 May 2023*

It's small and tidy, which I like. The plate comes off the back easily for fixing to a surface. The battery was new, wrapped in cellophane and worked at first test: it's LOUD, no one could sleep through this, not even a one-brain-cell orange tabby cat. Overall, I'm quite satisfied with this smoke detector. The only thing I can see that I would improve is the length of the wires that connect the battery; because they're very thin wires and not very robust, and had to be bent at such an acute angle I was concerned that they would break when pressing the connected battery into the back. If the wires were slightly longer and more robust I would give this a 5 star review. I would give it 6 stars if it came with a one-brain-cell orange tabby cat. EDIT It was fine for 3 days and then it started sounding without reason. Had to take the battery out. :(

## Frequently Bought Together

- FireAngel Optical Smoke Alarm with 5 Year Replaceable Batteries, FA6615-R-T2 (ST-625 replacement, new gen) - Twin Pack
- 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

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-06-17*