---
product_id: 86160751
title: "ST-622T Smoke Alarm, 2 Pack"
brand: "fireangel"
price: "€ 115.69"
currency: EUR
in_stock: true
reviews_count: 13
category: "Fireangel"
url: https://www.desertcart.nl/products/86160751-st-622t-smoke-alarm-2-pack
store_origin: NL
region: Netherlands
---

# Toast-proof nuisance alarm filter 10-year sealed lithium battery Thermoptek multi-sensor tech ST-622T Smoke Alarm, 2 Pack

**Brand:** fireangel
**Price:** € 115.69
**Availability:** ✅ In Stock

## Summary

> 🚨 Stay ahead of danger with decade-long, smart smoke detection!

## Quick Answers

- **What is this?** ST-622T Smoke Alarm, 2 Pack by fireangel
- **How much does it cost?** € 115.69 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-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

- • **Smart Silence Function:** Temporarily mute false alarms with a simple button press—perfect for burnt toast moments.
- • **Trusted by Fire Services:** Used by 90%+ of UK Fire & Rescue, ensuring professional-grade home safety.
- • **Decade-Long Power Assurance:** Sealed lithium battery lasts 10 years—install once, worry never.
- • **Advanced Thermoptek Detection:** Combines optical & thermal sensors for lightning-fast fire alerts, catching both flaming & smouldering fires.
- • **Effortless Installation & Maintenance:** Quick twist-lock setup with included screws and plugs, plus a handy test button for peace of mind.

## 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 10-year sealed lithium battery, it guarantees a decade of maintenance-free protection. Its smart silence and toast-proof functions reduce nuisance alarms, while its trusted design is endorsed by over 90% of UK Fire & Rescue Services. Easy to install and test, this alarm is the ultimate upgrade for millennial professionals seeking reliable, hassle-free home safety.

## Description

From the manufacturer 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 10 Year Thermoptek Smoke Alarm ST-622 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: All good. No issues - Very good Easy to install and a long battery life
Review: GREAT VALUE AND A FIRE SERVICE RECOMMENDED MAKE - Smoke detectors are there to save your life. They also have a lifespan of 10 years before they should be replaced. The last detectors we had were installed in the house in 1993 when it was built! These are easy to put up, two screws in the baseplate and then twist and lock the unit into place. It's really simple and even has instructions in the box. It has a burnt toast feature (you can switch it off for 10 minutes if you burn toast) and it's loud. A red light flashes every 45 seconds to tell you it is active. Test the device and you will find it wakes any hibernating grizzly. The battery life is 10 years, after which it should be replaced. Interestingly smoke detectors have 'use by' dates, always check. This one had a use by date of 10 years + 1 year so it was fresh from the factory. Incidentally, these can be found recommended on the Fire Service website. Good value for a pack of two.

## 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 |
| Batteries | 1 Lithium Metal batteries required. |
| Batteries Required? | No |
| Batteries included? | No |
| Battery Cell Type | Lithium |
| Best Sellers Rank | 16,953 in DIY & Tools ( See Top 100 in DIY & Tools ) 91 in Smoke Alarms |
| Colour | White |
| Customer Reviews | 4.3 4.3 out of 5 stars (9,185) |
| Date First Available | 8 Aug. 2018 |
| Delivery information | We cannot deliver certain products outside mainland UK ( Details ). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout. |
| Included Components | 2x Smoke Alarms + Base Plates, 4x Screws, 4x Rawl Plugs, 1x Instruction Manual |
| Item Package Quantity | 1 |
| Item Weight | 310 g |
| Item model number | TST-620Q |
| Manufacturer | FireAngel Safety Technology Ltd |
| Part Number | TST-622Q |
| Pattern | Smoke Alarm |
| Power Source | Battery Powered |
| Product Dimensions | 12.9 x 12.9 x 3.3 cm; 310 g |
| Size | 2 Pack |
| Style | TST-622 |

## Product Details

- **Alarm:** Visual
- **Brand:** Fireangel
- **Colour:** White
- **Global Trade Identification Number:** 00816317001698, 00816317002961
- **Item weight:** 310 Grams
- **Manufacturer:** FireAngel Safety Technology Ltd
- **Number of items:** 2
- **Power source:** Battery Powered
- **Sensor type:** Photoelectric
- **Style:** TST-622

## Images

![ST-622T Smoke Alarm, 2 Pack - Image 1](https://m.media-amazon.com/images/I/51bX4mVQEtL.jpg)

## 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

### ⭐⭐⭐⭐⭐ All good. No issues
*by D***K on 27 October 2025*

Very good Easy to install and a long battery life

### ⭐⭐⭐⭐⭐ GREAT VALUE AND A FIRE SERVICE RECOMMENDED MAKE
*by H***S on 28 February 2021*

Smoke detectors are there to save your life. They also have a lifespan of 10 years before they should be replaced. The last detectors we had were installed in the house in 1993 when it was built! These are easy to put up, two screws in the baseplate and then twist and lock the unit into place. It's really simple and even has instructions in the box. It has a burnt toast feature (you can switch it off for 10 minutes if you burn toast) and it's loud. A red light flashes every 45 seconds to tell you it is active. Test the device and you will find it wakes any hibernating grizzly. The battery life is 10 years, after which it should be replaced. Interestingly smoke detectors have 'use by' dates, always check. This one had a use by date of 10 years + 1 year so it was fresh from the factory. Incidentally, these can be found recommended on the Fire Service website. Good value for a pack of two.

### ⭐⭐⭐⭐⭐ 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.

## Frequently Bought Together

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---

*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-03-09*