---
product_id: 86160751
title: "FireAngel ST-622T Smoke Alarm, 2 Pack"
brand: "fireangel"
price: "€ 99.57"
currency: EUR
in_stock: true
reviews_count: 9
category: "Fireangel"
url: https://www.desertcart.nl/products/86160751-fireangel-st-622t-smoke-alarm-2-pack
store_origin: NL
region: Netherlands
---

# 10-year product lifespan 10-year sealed lithium battery Thermoptek multi-sensor tech FireAngel ST-622T Smoke Alarm, 2 Pack

**Brand:** fireangel
**Price:** € 99.57
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay safe, stay smart — fire protection that works as hard as you do!

## Quick Answers

- **What is this?** FireAngel ST-622T Smoke Alarm, 2 Pack by fireangel
- **How much does it cost?** € 99.57 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/86160751-fireangel-st-622t-smoke-alarm-2-pack)

## 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

- • **Toast-Proof Design:** Minimizes false alarms from everyday cooking fumes, so your peace of mind stays uninterrupted.
- • **Smart Silence Function:** Temporarily mute nuisance alarms with a simple press, perfect for cooking or brief false alerts.
- • **Hassle-Free 10-Year Battery:** Sealed lithium battery powers your safety for a decade—no replacements, no interruptions.
- • **Trusted by UK Fire Services:** Used by 90%+ of UK Fire & Rescue, this alarm is the gold standard in home fire safety.
- • **Advanced Thermoptek Detection:** Combines optical & thermal sensors for lightning-fast fire alerts, catching both flaming & smouldering fires.

## Overview

The FireAngel ST-622T Smoke Alarm 2 Pack features cutting-edge Thermoptek multi-sensor technology that rapidly detects both fast flaming and slow smouldering fires. With a sealed 10-year lithium battery and a full product lifespan of 10 years, it offers maintenance-free, reliable protection. Its smart silence and toast-proof functions reduce nuisance alarms, making it ideal for modern homes. Trusted by over 90% of UK Fire & Rescue Services, this alarm combines professional-grade safety with user-friendly design.

## Description

From the manufacturer 10 Year Thermoptek Smoke Alarm ST-622 ST-622 Simple to install and easy to test and silence, the ST-622 smoke alarm is designed to alert the household to the presence of smoke and provide precious time to escape. Alarm Screws Baseplate Manual Using the sensing technology of choice for the UK's Fire and Rescue Service, the FireAngel ST-622 is a sealed 10 year battery powered Thermoptek smoke alarm with improved detection of slow-smouldering fires. It's handy "sleep-easy" function allows the smoke alarm to be temporarily silenced for 8 hours. Positioning : Bedroom | Living room | Hallway | Landing | Dining room Tamper-proof 10 year sealed battery powered alarm Thermoptek optical smoke sensor - Detects slow-smouldering fires Smart Silence - Silence false alarms Toast Proof - Reduces nuisance alarms Thermoptek Our unique technology - Thermoptek Multi-Sensor technology combines the very latest in optical sensing with a thermal enhancement. It constantly monitors for temperature change and if a sudden temperature rise is detected the sensitivity of the alarm is increased. Precision Multi-sensor Optical and heat detection technologies combine to increase the sensitivity of the alarm for a faster response. This provides a much faster reaction to both slow smouldering and fast-flaming fires in a single alarm. UK Fire And Rescue Services We are leading the way in fire safety with state of the art design and technology to deliver the most reliable, efficient and desirable home safety solutions, FireAngel products are used by over 90% of UK Fire and Rescue Services.

Review: Great product - Great product.
Review: Repeat customer - This is really a review for the two smoke alarms I bought 12 years ago - they were FireAngel Model SI-610. They had been working fine since I got them (as far as I know), then 6 weeks ago one of them started emitting its low battery beep. So I bought another two of the nearest current equivalent, the ST-622, hoping they will last as long. I was pleased to find that, in spite of the change in model number, they are backwards compatible with the old backplate, so installation only took a few seconds. Today I had to replace the second one. Including a 10 year life battery is a great idea, as the radioactive source in the alarm only lasts about 10 years anyway before the whole unit needs replacing. So it works out cheaper than replacing the battery every year or two, and with less faff. Apart from cosmetic changes, the only difference I can see between the two models is that the originals were made in China, and the later ones in Poland. Hopefully, these will last as long, and I won't have to trigger the 10 year guarantee.

## Features

- Thermoptek multi-sensor rapidly detects fast flaming & slow smouldering fires
- Smart silence - silence your smoke alarm by momentarily pressing the test button, Ideal for nuisance alarms
- Toast proof - less prone to nuisance alarms from cooking fumes
- Product life span: 10 year. Battery life: 10 year sealed for life Battery
- Certified to BS EN14604: 2005

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00OTN2P3O |
| Alarm | Audible |
| Battery Average Life | 10 years |
| Battery Type | Sealed Lithium Battery |
| Best Sellers Rank | 24,677 in DIY & Tools ( See Top 100 in DIY & Tools ) 85 in Smoke Alarms |
| Brand | Fireangel |
| Colour | White |
| Customer Reviews | 4.6 out of 5 stars 9,008 Reviews |
| Global Trade Identification Number | 00816317001698, 00816317002961 |
| Included Components | 2x Smoke Alarms + Base Plates, 4x Screws, 4x Rawl Plugs, 1x Instruction Manual |
| Item Dimensions D x W x H | 3.4D x 13W x 13H centimetres |
| Item Type Name | Smoke Alarm |
| Item Weight | 310 Grams |
| Item weight | 310 Grams |
| Manufacturer | FireAngel Safety Technology Ltd |
| Manufacturer Warranty Description | 5 years. |
| Material | ABS |
| Model Number | TST-620Q |
| Number of Items | 2 |
| Operating Humidity | Up to 90% RH non-condensing |
| Part Number | TST-622Q |
| Power source | Battery Powered |
| Product Style | TST-622 |
| Product dimensions | 3.4D x 13W x 13H centimetres |
| Sensor Type | Photoelectric |
| Style | TST-622 |
| UPC | 880208490465 816317001698 816317002961 |
| Unit Count | 2.0 count |
| Upper Temperature Rating | 38 Degrees Celsius |

## Product Details

- **Alarm:** Audible
- **Brand:** Fireangel
- **Colour:** White
- **Item weight:** 310 Grams
- **Operating humidity:** Up to 90% RH non-condensing
- **Power source:** Battery Powered
- **Product dimensions:** 3.4D x 13W x 13H centimetres
- **Sensor type:** Photoelectric
- **Style:** TST-622
- **Upper temperature rating:** 38 Degrees Celsius

## Images

![FireAngel ST-622T Smoke Alarm, 2 Pack - Image 1](https://m.media-amazon.com/images/I/51bX4mVQEtL.jpg)
![FireAngel ST-622T Smoke Alarm, 2 Pack - Image 2](https://m.media-amazon.com/images/I/81vkoTmn3TL.jpg)
![FireAngel ST-622T Smoke Alarm, 2 Pack - Image 3](https://m.media-amazon.com/images/I/71bOA7OT7eL.jpg)
![FireAngel ST-622T Smoke Alarm, 2 Pack - Image 4](https://m.media-amazon.com/images/I/714LDJdAQSL.jpg)
![FireAngel ST-622T Smoke Alarm, 2 Pack - Image 5](https://m.media-amazon.com/images/I/516biEyZhuL.jpg)

## Available Options

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

## Questions & Answers

**Q: One of the detectors doesn’t work**
A: Return them. Contact Amazon https://www.amazon.co.uk/gp/orc/returns/homepage.html/ref=orc_surl_ret_hp?ref_=orc_spr_home_page_rdr&fg=1

**Q: Can you use with 3m magnetic plates**
A: Yes. Works really well with them.

**Q: What does the diameter of the baseplate measure please?**
A: Alarm is 130mm across,  the baseplate or fixing plate is 120mm

**Q: how loud is it ie how many decibels  many thanks**
A: Thank you for your enquiry. The answer to your question is 85dB(A) at 3m (minimum). If you require any further information please do not hesitate to contact us directly.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product
*by M***L on 26 July 2026*

Great product.

### ⭐⭐⭐⭐⭐ Repeat customer
*by D***Y on 8 June 2019*

This is really a review for the two smoke alarms I bought 12 years ago - they were FireAngel Model SI-610. They had been working fine since I got them (as far as I know), then 6 weeks ago one of them started emitting its low battery beep. So I bought another two of the nearest current equivalent, the ST-622, hoping they will last as long. I was pleased to find that, in spite of the change in model number, they are backwards compatible with the old backplate, so installation only took a few seconds. Today I had to replace the second one. Including a 10 year life battery is a great idea, as the radioactive source in the alarm only lasts about 10 years anyway before the whole unit needs replacing. So it works out cheaper than replacing the battery every year or two, and with less faff. Apart from cosmetic changes, the only difference I can see between the two models is that the originals were made in China, and the later ones in Poland. Hopefully, these will last as long, and I won't have to trigger the 10 year guarantee.

### ⭐⭐⭐⭐⭐ A Great Product for a Great Price
*by J***G on 30 January 2019*

I have had Fire Angel Smoke Alarms in the past, so bought these as replacements. It is very easy to install and there is no need for a Masters Degree in Electrical Engineering!! The pack comes with the smoke alarm, base plate, 2No raw plugs and 2No screws. Simply punch out the 2No plastic holes in the base plate where the screws will be installed. Place the base plate on the ceiling and mark-out the screw hole locations. Drill a 5mm hole and place the raw plugs that are provided. Locate the base plate on the ceiling to match the screw hole locations and screw the base plate tight to the ceiling. Match the locator on the smoke alarm with the base plate and twist to lock into position. The built-in 10yr battery only activates once the smoke alarm is locked into position. Push the test button and if the alarm sounds, pat yourself on the back for a job well done!! The alarm is LOUD!! A well recommended product that you can trust.

## Frequently Bought Together

- Fireangel TST-622Q Smoke Alarm, 2 Pack
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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-09-18*