---
product_id: 48844174
title: "ST-622T Thermoptek Smoke Alarm – 10 Year Sealed Lithium Battery, Multi-Sensor Optical Detection, Easy Install, Standalone FireAngel Smoke Alarm for Home"
brand: "fireangel"
price: "45407CFA"
currency: XOF
in_stock: true
reviews_count: 8
category: "Fireangel"
url: https://www.desertcart.sn/products/48844174-st-622t-thermoptek-smoke-alarm-10-year-sealed-lithium-battery
store_origin: SN
region: Senegal
---

# 10-year sealed lithium battery Multi-sensor Thermoptek detection Easy install with auto battery engagement ST-622T Thermoptek Smoke Alarm – 10 Year Sealed Lithium Battery, Multi-Sensor Optical Detection, Easy Install, Standalone FireAngel Smoke Alarm for Home

**Brand:** fireangel
**Price:** 45407CFA
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay a step ahead of fire with smart, silent, and steadfast protection!

## Quick Answers

- **What is this?** ST-622T Thermoptek Smoke Alarm – 10 Year Sealed Lithium Battery, Multi-Sensor Optical Detection, Easy Install, Standalone FireAngel Smoke Alarm for Home by fireangel
- **How much does it cost?** 45407CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/48844174-st-622t-thermoptek-smoke-alarm-10-year-sealed-lithium-battery)

## 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

- • **Silent Control:** Large central button lets you smart-silence nuisance alarms for 10 minutes without losing protection.
- • **Decade-Long Power:** Forget battery swaps with a 10-year sealed lithium battery that keeps you protected effortlessly.
- • **Hassle-Free Setup:** Auto battery engagement and included fixings make installation a breeze—no electrician needed.
- • **Certified Loud & Clear:** 85dB alarm meets strict BS EN standards, ensuring your home wakes up to danger, not false alerts.
- • **Next-Gen Smoke Sensing:** Patented Thermoptek multi-sensor tech detects smoke faster and smarter, reducing false alarms.

## Overview

The FireAngel ST-622T Thermoptek Smoke Alarm combines patented multi-sensor optical detection with a 10-year sealed lithium battery for reliable, maintenance-free fire safety. Designed for easy installation with automatic battery engagement and a large smart silence button, it minimizes false alarms while delivering a powerful 85dB alert that meets rigorous safety standards. Ideal for bedrooms, hallways, and living rooms, it offers peace of mind with a decade of dependable performance.

## Description

Free delivery and returns on all eligible orders. Shop FireAngel ST-622T Thermoptek Smoke Alarm – 10 Year Sealed Lithium Battery, Multi-Sensor Optical Detection, Easy Install, Standalone FireAngel Smoke Alarm for Home.

Review: Very reliable . Good value fir money - Brilliant ! Simple to fit and a great product . My last one has been in place for 10 years. ! Gives you peace of mind 🙏
Review: Perfect product - Installed this and immediately felt like my house had hired a tiny, angry security guard. It’s so sensitive it’ll warn you if you even think about burning toast. Loud enough to wake the entire street, maybe even the next street over. Goes up easy, sits there silently judging your cooking skills, and only screams when absolutely necessary. Makes you feel weirdly safe, like “yeah, this thing would definitely snitch on a fire before it even starts.”

## Features

- THERMOPTEK TECHNOLOGY: The FireAngel ST-622 Thermoptek smoke alarm uses patented multi-sensor optical smoke alarm technology making it a reliable choice among fire alarms for home.
- LONG LIFE BATTERY: Powered by a 10 year sealed lithium battery, this standalone FireAngel smoke alarm provides dependable performance, featuring an End of Life indication that reminds when the unit should be replaced.
- LARGE CENTRAL BUTTON: Designed with a large central button for Test and Smart Silence, this smoke alarm can mute a known nuisance alarm for 10 minutes while the smoke detectors for home continue monitoring smoke levels.
- EASY INSTALLATION: Installation is simple with automatic battery engagement on the base plate. Built-in bug mesh and dust compensation help reduce false alarms, ensuring consistent performance of your smoke alarms for home.
- SAFETY ASSURED: With an 85dB alarm sound level at 3m, the FireAngel ST-622 smoke alarm meets BS EN 14604:2005+AC:2008 standards, making it suitable for bedrooms, hallways, and living rooms as part of trusted fireangel smoke alarms.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00XL4A8TA |
| Batteries | 2 AA batteries required. |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 1,008 in DIY & Tools ( See Top 100 in DIY & Tools ) 10 in Smoke Alarms |
| Colour | White |
| Customer Reviews | 4.5 4.5 out of 5 stars (5,298) |
| Date First Available | 13 May 2015 |
| 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 | 1x Smoke Alarm + Base Plate, 2x Screws, 2x Rawl Plugs, 1x Instruction Manual |
| Item Package Quantity | 1 |
| Item Weight | 155 g |
| Item model number | ST-622T |
| Manufacturer | FireAngel Safety Technology Ltd |
| Part Number | ST-622T |
| Power Source | Battery Powered |
| Product Dimensions | 12.9 x 12.9 x 3.3 cm; 155 g |
| Shape | Oval |
| Style | ST-622 |
| Voltage | 3 Volts |

## Product Details

- **Alarm:** Visual
- **Brand:** Fireangel
- **Colour:** White
- **Global Trade Identification Number:** 00816317002275
- **Item weight:** 155 Grams
- **Power source:** Battery Powered
- **Product dimensions:** 3.3D x 12.9W x 12.9H centimetres
- **Sensor type:** Photoelectric
- **Style:** ST-622
- **Upper temperature rating:** 1 Degrees Celsius

## Images

![ST-622T Thermoptek Smoke Alarm – 10 Year Sealed Lithium Battery, Multi-Sensor Optical Detection, Easy Install, Standalone FireAngel Smoke Alarm for Home - Image 1](https://m.media-amazon.com/images/I/51CaSvDQG7L.jpg)

## Questions & Answers

**Q: Is this smoke detector os coming with battery?**
A: They advertise it as having a 10 year fixed unit battery, so you can't replace it without replacing the unit.  My experience of them so far is that you can expect no more than 3 years before the low battery starts and you have to replace.  With 7 years 'left' on it's replace by end date.
Selling a unit as 10 years when it is 3 is disingenuous and I will not be buying Fireangel again.

**Q: Can ceiling mount for earlier model be used? Mine was installed a few years ago, so I think new models are same size.old one is ST620**
A: I have the SI-610 and was told when I phoned up this new one would fit in  the same mount

**Q: Does this product detect carbon monoxide?**
A: No - it is a fire and smoke alarm designed to detect house fires.

**Q: Will this attach to the base of my existing  ST-620 without me having to remove that as well?**
A: This unit is compatible with an ST-620 base plate.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Very reliable . Good value fir money
*by A***R on 17 January 2026*

Brilliant ! Simple to fit and a great product . My last one has been in place for 10 years. ! Gives you peace of mind 🙏

### ⭐⭐⭐⭐⭐ Perfect product
*by M***K on 29 November 2025*

Installed this and immediately felt like my house had hired a tiny, angry security guard. It’s so sensitive it’ll warn you if you even think about burning toast. Loud enough to wake the entire street, maybe even the next street over. Goes up easy, sits there silently judging your cooking skills, and only screams when absolutely necessary. Makes you feel weirdly safe, like “yeah, this thing would definitely snitch on a fire before it even starts.”

### ⭐⭐⭐⭐ Battery issues
*by K***L on 30 December 2022*

Product is easy to install and has possibly worked for a time (checked In October 22 and beeped as expected). Now December, heard a faint beep one day and checked the alarm- totally dead, no alarm no light flashing to indicate it was working. This product was purchased in April 2022 so definitely not 10year life and not worth buying. This is the 2nd unit of this type, the first was installed in 2019 by the local fire and rescue service. It lasted 3 years before beeping constantly during the night.

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.sn/products/48844174-st-622t-thermoptek-smoke-alarm-10-year-sealed-lithium-battery](https://www.desertcart.sn/products/48844174-st-622t-thermoptek-smoke-alarm-10-year-sealed-lithium-battery)

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-03-19*