---
product_id: 427074323
title: "Optical Smoke Alarm with 5 Year Replaceable Batteries, FA6615-R (ST-625 replacement, new gen)"
brand: "fireangel"
price: "€ 44.90"
currency: EUR
in_stock: true
url: https://www.desertcart.fi/products/427074323-optical-smoke-alarm-with-5-year-replaceable-batteries-fa6615-r
store_origin: FI
region: Finland
---

# 5-Year Battery Life Optical Sensing Tech Quiet Test Function Optical Smoke Alarm with 5 Year Replaceable Batteries, FA6615-R (ST-625 replacement, new gen)

**Brand:** fireangel
**Price:** € 44.90
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay Safe, Sleep Soundly! 💤

## Quick Answers

- **What is this?** Optical Smoke Alarm with 5 Year Replaceable Batteries, FA6615-R (ST-625 replacement, new gen) by fireangel
- **How much does it cost?** € 44.90 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/427074323-optical-smoke-alarm-with-5-year-replaceable-batteries-fa6615-r)

## 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

- • **5-Year Warranty:** Peace of mind with a robust 5-year manufacturer's warranty.
- • **Sleep Easy Mode:** Silence low battery alerts for 8 hours—rest easy!
- • **Rapid Fire Detection:** Optical technology for quick response to slow-burning fires.
- • **Seamless Replacement:** Easily swap with ST-625 and other models!
- • **Whisper-Quiet Testing:** Test without waking the household or disturbing neighbors.

## Overview

The FireAngel Optical Smoke Alarm is a cutting-edge safety device designed for easy replacement of older models like the ST-625. With advanced optical sensing technology, it detects smoke quickly, ensuring rapid response to potential fires. The alarm features a quiet test function, a sleep easy mode to silence low battery warnings, and comes with a 5-year warranty for added assurance. Ideal for homes in England and Wales, this alarm is a must-have for modern safety.

## Description

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

## Features

- About this item
- .
- The perfect replacement for FireAngel ST-625 model 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 alarm is supplied with 2 x AA batteries which can be replaced upon hearing the low battery warning, it is recommended you replace the alarm 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

## Images

![Optical Smoke Alarm with 5 Year Replaceable Batteries, FA6615-R (ST-625 replacement, new gen) - Image 1](https://m.media-amazon.com/images/I/51K5NsMcb0L.jpg)

## Frequently Bought Together

- FireAngel Optical Smoke Alarm with 5 Year Replaceable Batteries, FA6615-R (ST-625 replacement, new gen)
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**Shop now:** [https://www.desertcart.fi/products/427074323-optical-smoke-alarm-with-5-year-replaceable-batteries-fa6615-r](https://www.desertcart.fi/products/427074323-optical-smoke-alarm-with-5-year-replaceable-batteries-fa6615-r)

---

*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-17*