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Mains Radio-Interlink Smoke Alarms & Heat Alarms with Sealed Longlife Back-up Battery - FireAngel Pro 230 Series

Discontinued Product

This product has been discontinued.

alternative product

Radio-Interlinked Battery Powered Smoke & Heat Alarms - Hispec RF Pro Range

  • Battery: 10 year sealed lithium battery
  • Warranty: 5 year warranty
  • Radio-interlink up to 20 Hispec RF Pro Alarms
  • Suitable for BS 5839-6: 2019 Grade F1 installations
  • Compatible with the Hispec Control Unit and Carbon Monoxide Alarm
  • Alarms sold separately
  • Also suitable for the 2022 Scottish legislation

£31.07 inc VAT

£25.89 ex VAT

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Product Overview

Available in two versions for smoke or heat detection, the FireAngel Pro mains powered radio-interlinked alarms have a 10 year life and feature a sealed longlife lithium back-up battery to continue powering the units after a mains failure for the full lifespan of the alarms. The built-in radio-frequency technology enables up to 50 alarms to be wirelessly interlinked within the same system. Providing the earliest possible warning of fire, if one radio-interlinked alarm detects smoke or heat, all other alarms within the same system will also activate.

  • Suitable for installations complying to BS 5839-6: 2019 Grade D1
  • Kitemarked to BS EN 14604 (optical smoke) and BS 5446-2 (heat alarm)
  • Built-in radio-frequency technology allows wireless interlinking
  • A maximum of 50 radio-interlinked alarms can be interlinked
  • 230V mains powered with sealed longlife lithium back-up battery – never needs replacing!
  • No need to replace back-up battery for the life of the alarm
  • Available in two versions:
    • WST-230: Optical smoke alarm - for hallways, living rooms and bedrooms
    • WHT-230: Heat alarm - for kitchens and garages
  • Radio-frequency range: 200m in free space, up to 35m in buildings
  • Sold as single units
  • 1 year warranty
  • Loud 85dB warning alarm
  • Test, hush and Sleep-Easy" function
  • Frustration-free! No more beeping during the night because the battery needs changing
  • Locate function: allows you to find the alarm that activated the system
  • An interlinked system provides the earliest possible warning of fire
  • Please note: alarms are sold individually
  • This alarm is also suitable for the updated 2022 Scottish legislation for fire alarms in homes

In a wireless-only system the maximum number of compatible units that can interlink is 50, while a hard-wired-only system is limited to 30 units. In a mixed hard-wired and wireless alarm system these maximum quantities can be exceeded.

For each "group" of hard-wired alarms in a system, only one should be a wireless model. For example, in a 3 storey house you could hard-wire 2x ST-230 and 1x WST-230 alarms together on each floor with all of the WST-230 models wirelessly interlinked to each other. This can technically be done to a maximum of 50 groups of 30 alarms, though FireAngel has not designed, optimised, or tested these alarms for such a large system. Having so many alarms interlinked would create large communication delays between the alarms, potentially resulting in occupants not being given adequate warning of a fire. It is heavily recommended that customers desiring a large amount of alarms for a single property instead look into full Fire Alarm Systems which are designed for larger premises.

The tables below show all the units that can interlink with the FireAngel Pro Wi-Safe 2 alarms.

Alarms from the Same Series

Model Number Type of unit Type of interlink
WST-230 Mains Powered Optical Smoke Alarm Radio-interlinked or Hard-wire interlink
WHT-230 Mains Powered Heat Alarm Radio-interlinked or Hard-wire interlink
ST-230 Mains Powered Optical Smoke Alarm Hard-wire interlink
HT-230 Mains Powered Heat Alarm Hard-wire interlink

Compatible Alarms

Model Number
Type of unit
Type of interlink
WST637 Optical Smoke Alarm Radio-interlinked
WHT637 Heat Alarm Radio-interlinked

Carbon Monoxide Alarms

Model Number
Type of unit
Type of interlink
W7-CO-10X Carbon Monoxide Alarm Radio-interlinked

Ancillary Products

Model Number
Type of unit
Type of interlink
W2-SVP-630 Wireless Strobe and Vibrating Pad Radio-interlinked
W2-LFS-630 Wireless Low Frequency Sounder Radio-interlinked
Technical Data
Product Code

WST230 Thermally Enhanced Optical Smoke Alarm:  FAWST230

WHT230 Heat Alarm:  FAWHT230

Brand FireAngel
Back-Up Battery

Sealed longlife lithium

Dimensions (HxDia)

WST-230 Thermoptek Smoke Alarm: 52x141mm

WHT-230 Heat Alarm: 52x141mm

Operating Temperature

-10 °C to +45 °C

Radio Linking Frequency


Radio-Frequency Range

Free Space: Up to 200m

In Buildings: Up to 35m

Sound Output


Weight 0.28kg
Product Datasheets

Customer Reviews

4 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:

Perfect service.

Published on: 31st January 2019

Rating: 5 / 5 Stars

Reviewed by:

It does exactly what it says it will do

Published on: 11th September 2017

Rating: 5 / 5 Stars

Reviewed by:

replaced different manufacuter (Firex) with this one easily & setup wireless connection

Published on: 22nd February 2017

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Direct Telephone 01507 464181


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