10 Year Thermoptek Smoke Alarm FireAngel ST-622

Discontinued Product

This product has been discontinued.

alternative product

FireAngel FA6620-R

The FireAngel FA6620-R optical smoke alarm with a 10 year sealed battery, suitable for hallways, bedrooms and living areas.

Suitable for replacing your existing ST-622, as the new model can be installed on the old base plate.

£23.39 inc VAT

£19.49 ex VAT

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Product Overview

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 when it emits low battery or end of life warning chirps.

  • Thermoptek optical smoke sensor - detects slow-smouldering fires
  • Tamper-proof sealed 10 year battery powered alarm
  • CE marked and Kitemarked to BS EN 14604
  • Sensing technology of choice for the UK's Fire and Rescue Service
  • "Sleep-Easy" function allows the low battery or end of life warning chirp to be silenced for 8 hours
  • Test and hush button function
  • 1 year warranty
  • Suitable for BS 5839-6: 2019 Grade F1 installations
Technical Data
Product Code FAST622X
Alternative Product Codes ST-622R, ST-622Q, ST-622T, ST620, SI610, SO601,
Brand FireAngel
Battery Type

10 year sealed lithium battery

Dimensions (HxD)


Operating Temperature

+4 °C to +38 °C

Relative Humidity

Up to 90%

Sound Output


Weight 0.21kg
Product Datasheets

Customer Reviews

70 customers have given this product an overall rating of 4.8 out of 5

Reviews by real customers

All of our product reviews are written by real customers that have purchased this product from us and are published without modification.

Rating: 5 / 5 Stars

Reviewed by: R B

Easy to fit and test.

Published on: 14th November 2021

Rating: 4 / 5 Stars

Reviewed by: D A

Easy to fit and does the job

Published on: 17th September 2021

Rating: 5 / 5 Stars

Reviewed by: A Y

Simple to install and works

Published on: 13th May 2021

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