Wi-Safe 2 Thermistek Heat Alarm FireAngel WHT-630

Discontinued Product

This product has been discontinued and is no longer available to buy.

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Product Overview

The FireAngel WHT-630 is a 10 year sealed battery thermistek heat alarm from the radio-interlinked Wi-Safe 2 range of devices. Providing quick detection of significant rate-of-rise in temperature, the heat alarm is ideal for kitchens and garages where a standard smoke alarm would be unsuitable and can be wirelessly interconnected with up to 50 other Wi-Safe 2 devices within a single system. The alarm benefits from a "locate" function, helping you to easily find the initially activated alarm within an interlinked system.

  • Sealed 10 year battery powered heat alarm
  • CE marked and Kitemarked to the lastest standard: BS 5446-2
  • Can be wirelessly interconnected with up to 50 other Wi-Safe 2 devices
  • Radio-frequency range: 200m in free space, up to 35m in buildings
  • Thermistek sensor quickly reacts to significant rate-of-rise in temperature
  • Locate feature helps to find the initially activated alarm of an interlinked system
  • Ideal for kitchens, laundry rooms and garages
  • 5 year warranty
  • Suitable for BS 5839-6: 2019 Grade F1 installations
  • An interlinked system provides the earliest possible warning of danger
Technical Data
Product Code FAWHT630
Brand FireAngel
Battery Type

10 year sealed lithium battery

Dimensions (HxDia)


Radio Linking Frequency


Radio-Frequency Range

In Buildings: Up to 35m

Free Space: Up to 200m

Relative Humidity

Up to 90%

Sound Output


Temperature Trigger

+54 °C to +65 °C

Weight 0.26kg
Product Datasheets

Customer Reviews

8 customers have given this product an overall rating of 4.9 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: J R

Loud alarm. Easy to install.

Published on: 30th September 2018

Rating: 4 / 5 Stars

Reviewed by: T M

Easy to fit and works well.

Published on: 20th October 2017

Rating: 5 / 5 Stars

Reviewed by: S F

Brilliant and just so easy to link with the others. Will definitely not be going back to individual battery smoke alarms.

Published on: 29th August 2017

Rating: 5 / 5 Stars

Reviewed by: B M

Quality product, easy to link to similar Wi-Safe devices and install Small footprint, unobtrusive design - very pleased with my purchase.

Published on: 4th July 2017

Rating: 5 / 5 Stars

Reviewed by: E P

Easy to Install & Test

Published on: 6th November 2016

Rating: 5 / 5 Stars

Reviewed by: R C

Quick delivery. Good website.

Published on: 10th May 2016

Rating: 5 / 5 Stars

Reviewed by: A S

Very easy to install and connect. Great Product.

Published on: 25th April 2016

Rating: 5 / 5 Stars

Reviewed by: J B

Just what the kitchen needs A fire in the kitchen at night. Smoke needs to drift into the smoke alarm in the hall before alerting people. Probably my kitchen is the most likely place for a fire to start. I have 4 sources of flame in my kitchen. Wifi linkage to other devices gives a chance of earlier escape from danger.

Published on: 18th April 2016