Mains Powered Thermoptek Smoke Alarm FireAngel ST-230

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Product Overview

Thermally enhanced to reduce nuisance alarms, the FireAngel Pro ST-230 is a mains powered Thermoptek smoke alarm suitable for bedrooms, living rooms and hallways adjacent to the kitchen area. The ST-230 features a lifetime lithium back-up battery that continues to power the alarm after a mains failure, and does not need replacing during the its 10 year lifespan. Up to 30 FireAngel Pro mains powered smoke and heat alarms can be hard-wire interconnected within a single system, providing fire detection throughout the property.

  • Thermoptek optical smoke alarm - detects slow-smouldering fires
  • 230V mains powered with sealed lithium back-up battery
  • Frustration-free! No more beeping during the night because the battery needs changing
  • CE marked and Kitemarked to BS EN 14604
  • Thermally enhanced sensor is less prone to false alarms
  • Up to 30 FireAngel Pro alarms can be interconnected (via cable)
  • An interlinked system enables all alarms to sound if one detects fire
  • Test, hush and "Sleep-Easy" function
  • 1 Year Warranty
  • Locate function: allows you to find the alarm that activated the system
  • Tamper-proof mounting plate secures the alarm head in place
  • Suitable for installations complying to BS 5839-6: 2019 Grade D1
Technical Data
Product Code FAST230
Alternative Product Codes ST-230R, ST-230Q, ST-230T
Brand FireAngel
Back-Up Battery

sealed lifetime lithium battery

Dimensions (HxDia)


Operating Temperature

-10 °C to +45 °C

Sound Output


Weight 0.26kg
Product Datasheets

Customer Reviews

5 customers have given this product an overall rating of 5 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:

Easy to fit I wasn't sure how to activate it - but clicking it in to the existing ceiling fitted automatically switched it on

Published on: 18th February 2018

Rating: 5 / 5 Stars

Reviewed by:

Alarm does what it says on the packet, easy to install and looks good

Published on: 18th November 2017

Rating: 5 / 5 Stars

Reviewed by:

Easy to fit and well designed

Published on: 4th November 2017

Rating: 5 / 5 Stars

Reviewed by:

Replaced different manufacuter (Firex) with this one easily

Published on: 22nd February 2017

Rating: 5 / 5 Stars

Reviewed by:

Nice bug hush button. Discrete design.

Published on: 17th January 2017