---
product_id: 48844174
title: "FireAngel 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: "R1057"
currency: ZAR
in_stock: true
category: "Fire Angel"
url: https://www.desertcart.co.za/products/48844174-fireangel-st-622t-thermoptek-smoke-alarm-10-year-sealed-lithium
store_origin: ZA
region: South Africa
---

# 10-year sealed lithium battery Thermoptek multi-sensor detection Easy, drill-free installation FireAngel 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:** R1057
**Availability:** ✅ In Stock

## Summary

> 🔥 Stay safe, stay smart — the smoke alarm that works as hard as you do! 🔋

## Quick Answers

- **What is this?** FireAngel 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?** R1057 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/48844174-fireangel-st-622t-thermoptek-smoke-alarm-10-year-sealed-lithium)

## 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

- • **Decade-Long Power:** Forget battery swaps with a 10-year sealed lithium cell—set it and forget it.
- • **Hassle-Free Setup:** Automatic battery engagement and lightweight design make installation a breeze—no pro needed.
- • **Silent Smart Silence:** Mute nuisance alarms for 10 minutes without compromising your home’s safety monitoring.
- • **Built to Last & Perform:** Dust compensation and bug mesh reduce false alarms, ensuring reliable protection year-round.
- • **Smart Multi-Sensor Tech:** Thermoptek optical + thermal sensors detect fires faster and cut false alarms.

## Overview

The FireAngel ST-622T Thermoptek Smoke Alarm combines patented multi-sensor optical and thermal detection technology with a 10-year sealed lithium battery for long-lasting, reliable fire protection. Designed for easy installation with automatic battery engagement and features like a large central test/silence button, it minimizes false alarms while maximizing peace of mind. Lightweight and compact, it’s the perfect standalone smoke alarm for modern homes seeking fuss-free, durable safety.

## 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.

## 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.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00XL4A8TA |
| Alarm | Visual |
| Best Sellers Rank | 1,007 in DIY & Tools ( See Top 100 in DIY & Tools ) 10 in Smoke Alarms |
| Brand | FireAngel |
| Colour | White |
| Customer Reviews | 4.5 4.5 out of 5 stars (5,483) |
| Global Trade Identification Number | 00816317002275 |
| Included Components | 1x Smoke Alarm + Base Plate, 2x Screws, 2x Rawl Plugs, 1x Instruction Manual |
| Item Dimensions D x W x H | 3.3D x 12.9W x 12.9H centimetres |
| Item Part Number | ST-622T |
| Item Type Name | 10 Year Thermally Enhanced Optical Smoke Alarm |
| Item Weight | 155 Grams |
| Manufacturer | FireAngel Safety Technology Ltd |
| Model Number | ST-622T |
| Number of Items | 1 |
| Part Number | ST-622T |
| Power source | Battery Powered |
| Product Style | ST-622 |
| Sensor Type | Photoelectric |
| UPC | 816317002275 |
| Unit Count | 1.0 count |
| Upper Temperature Rating | 1 Degrees Celsius |

## 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

![FireAngel 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)

## Available Options

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

## 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.

## Frequently Bought Together

- Fireangel ST-622T 10 Year Thermally Enhanced Optical Smoke Alarm, White
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**Shop now:** [https://www.desertcart.co.za/products/48844174-fireangel-st-622t-thermoptek-smoke-alarm-10-year-sealed-lithium](https://www.desertcart.co.za/products/48844174-fireangel-st-622t-thermoptek-smoke-alarm-10-year-sealed-lithium)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-11-14*