---
product_id: 432278131
title: "Fireangel Optical Smoke Alarm with 5 Year Replaceable Batteries, FA6615 R T2 ST 625 replacement, new gen Twin Pack, White"
brand: "fireangel"
price: "$127.89"
currency: USD
in_stock: true
reviews_count: 1
category: "Fireangel"
url: https://www.desertcart.ec/products/432278131-fireangel-optical-smoke-alarm-with-5-year-replaceable-batteries-fa6615
store_origin: EC
region: Ecuador
---

# 10-year sensor lifespan 5-year replaceable AA batteries Optical smoke sensing tech Fireangel Optical Smoke Alarm with 5 Year Replaceable Batteries, FA6615 R T2 ST 625 replacement, new gen Twin Pack, White

**Brand:** fireangel
**Price:** $127.89
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay safe, stay savvy — smoke detection that works as hard as you do! 👁️

## Quick Answers

- **What is this?** Fireangel Optical Smoke Alarm with 5 Year Replaceable Batteries, FA6615 R T2 ST 625 replacement, new gen Twin Pack, White by fireangel
- **How much does it cost?** $127.89 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/432278131-fireangel-optical-smoke-alarm-with-5-year-replaceable-batteries-fa6615)

## 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

- • **Sleep Easy Mode:** Mute low battery alerts for 8 hours while staying fully protected overnight.
- • **Long-Lasting Power:** Equipped with 5-year replaceable AA batteries for hassle-free maintenance and reliability.
- • **Seamless Replacement:** Direct swap for FireAngel ST-625 and compatible with other models using existing baseplates.
- • **Silent Night Testing:** Test your alarm quietly without disturbing your household or neighbors.
- • **Swift Smoke Detection:** Optical sensor spots slow-burning fires fast, minimizing false alarms from cooking.

## Overview

The FireAngel FA6615 Optical Smoke Alarm Twin Pack offers cutting-edge photoelectric sensing technology for rapid detection of slow-burning fires. Featuring a 10-year sensor life and 5-year replaceable AA batteries, it ensures long-term reliability with minimal upkeep. Designed for easy replacement of older FireAngel models, it includes quiet test and sleep easy modes to blend safety seamlessly into your busy lifestyle. Backed by a 5-year warranty, it’s the smart choice for modern homes in England and Wales.

## Description

Designed as a replacement for the ST-625 model, the FireAngel FA6615 smoke alarm (twin pack) has a 10-year sensor, is fitted with 2 x AA 5-year replaceable batteries and is 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 ideal for slow-burning fires with thick white smoke and less prone to false alerts from cooking fumes. 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 the batteries ASAP. TEST/SILENCE To test your device, press the large test button. The alert will sound to verify that the alarm is functioning correctly. During a known false alarm, press the test button to temporarily silence the alarm for 10 minutes.

Review: جيد جدا - شكرا علي سرعة الاستجابه

## Features

- The perfect replacement for FireAngel ST-625 models with a simple swap of the baseplates, or for ST-622, ST-620 and ST-750 models using the existing baseplate
- With optical sensing technology smoke is rapidly detected as it enters the alarm chamber, for a quick reaction to slow burning fires
- The alarms are supplied with 4 x AA batteries which can be replaced upon hearing the low battery warning, it is recommended you replace the alarms after 10 years
- Featuring a quiet test function which means you're less likely to wake up loved ones or disturb the neighbours when testing your alarms
- Give yourself vital time to replace the batteries in your alarm by silencing low battery warnings for 8 hours using the sleep easy feature.Suitable for homes in England and Wales. Not suitable for Scottish homes under the new regulations.FireAngel alarms are rigorously tested to ensure unrivalled quality and longevity and come with a 5 year manufacturer's warranty for peace of mind.Included components: 1 x instruction manual

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09WB3FQNK |
| Alarm | Smoke Alarm |
| Best Sellers Rank | #18,488 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #25 in Smoke Alarms |
| Brand | Fireangel |
| Built-In Media | 1 x Instruction Manual, 2 x Baseplate, 2 x Optical Smoke Alarms, 4 x AA Batteries |
| Color | White |
| Colour | White |
| Customer Reviews | 4.6 out of 5 stars 957 Reviews |
| Enclosure Material | Plastic |
| Item Dimensions D x W x H | 3.2D x 11.8W x 11.8H centimeters |
| Item Type Name | Smoke Alarm |
| Item Weight | 185 Grams |
| Item weight | 185 Grams |
| Manufacturer | FireAngel |
| Model Number | FA6615-R-T2 |
| Power Source | Battery Powered |
| Power source | Battery Powered |
| Product Style | 5 Year Replaceable Battery (Better) |
| Product dimensions | 3.2D x 11.8W x 11.8H centimeters |
| Sensor Type | Photoelectric |
| Style | 5 Year Replaceable Battery (Better) |
| UPC | 816317006341 |
| Unit Count | 2 Count |

## Product Details

- **Brand:** Fireangel
- **Colour:** White
- **Power source:** Battery Powered
- **Product dimensions:** 3.2D x 11.8W x 11.8H centimeters
- **Style:** 5 Year Replaceable Battery (Better)

## Images

![Fireangel Optical Smoke Alarm with 5 Year Replaceable Batteries, FA6615 R T2 ST 625 replacement, new gen Twin Pack, White - Image 1](https://m.media-amazon.com/images/I/51iqUjgQxSL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ جيد جدا
*by ا***س on 8 August 2024*

شكرا علي سرعة الاستجابه

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**Shop now:** [https://www.desertcart.ec/products/432278131-fireangel-optical-smoke-alarm-with-5-year-replaceable-batteries-fa6615](https://www.desertcart.ec/products/432278131-fireangel-optical-smoke-alarm-with-5-year-replaceable-batteries-fa6615)

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-03-05*