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Mains Powered Smoke Alarms & Heat Alarms with Alkaline Back-up Battery - FireAngel W1-R Series

4.8 out of 5 stars
From: £16.55 inc VAT
£13.79 ex VAT
Product Overview

The FireAngel W1-R series of alarms are available as either a heat or optical smoke alarm, both of which are mains powered with a replaceable 9V back-up battery. Both alarms feature a large, central silence button which also acts as a test button the SW1-R optical smoke alarm while the HW1-R heat alarm has a separate button for testing. Up to 12 W1-R and W1-PF series alarms can be interlinked together via a dedicated cable, including the CW1-PF-T mains powered carbon monoxide alarm, to provide full coverage and reliable warning of possible danger throughout the premises. These alarms also feature a 'safety clip' which prevents them from being installed without a battery, to ensure there is a back-up in case of a mains power failure.

  • Power: 230V mains powered with battery back-up
  • Backup Battery: 9V alkaline battery (included)
  • Warranty: 1 year warranty
  • Available in Optical Smoke and Heat detector versions:
    • SW1-R Optical Smoke Alarm: ideal for hallways, landings, bedrooms, living rooms, and home offices
    • HW1-R Heat Alarm: ideal for kitchens, attics, and garages
  • Up to 12 alarms can be hard-wire interlinked within a single system
  • Easily perform weekly tests at the push of a button
  • Uses the latest detection technologies to reduce nuisance alarms
  • Can also be interlinked with the CW1-PF-T mains powered carbon monoxide alarm
  • Integrated 'safety clip' feature prevents them from being fitted without a battery
  • Large silence button central to the alarm
  • Suitable for BS 5839-6: 2019 Grade D2 installations
  • Kitemarked to BS EN 14604 (optical smoke) and BS EN 5446-2 (heat)
  • Please note: Alarms sold separately
  • This alarm is also suitable for the updated 2022 Scottish legislation for fire alarms in homes

The table below shows all the units that can interlink with the FireAngel W1-R alarms.

Model Number Type of unit Type of interlink
SW1-R Mains Powered Optical Smoke Alarm Hard-wire interlink
HW1-R Mains Powered Heat Alarm Hard-wire interlink
CW1-PF-T Mains Powered Carbon Monoxide Alarm Hard-wire interlink

Technical Data
Product Code
SW1-R Optical Smoke Alarm FASW1R
HW1-R Heat Alarm FAHW1R
Brand FireAngel
Back-Up Battery

9V PP3 Alkaline or Zinc Carbon

Dimensions (HxDia)

SW1-R Optical: 42x126mm

HW1-R Heat: 49x126mm

Operating Temperature

+5 °C to +38 °C

Sound Output


Weight 0.20kg
Product Datasheets
FAQs (4)
Q. I want to install an interlinked smoke alarm system throughout my home, but what type of smoke alarms do I need in different rooms?

We recommend a heat alarm in the kitchen, optical alarms in living rooms and hallway and ionisation alarms on landings.

Q. Do you need an electrician to connect mains powered smoke alarms?

It is necessary that an electrician installs mains powered smoke alarms.

Q. How long do the batteries last in smoke alarms?

The 9V alkaline batteries and AA alkaline batteries generally last 12 to 18 months. Lithium batteries will usually last 5x longer than their alkaline counterparts, achieving around 5 years lifetime. Some lithium cells are also rechargeable, and when used in a mains-powered alarm may last for the entire functional lifespan of the alarm. Newer alarm models may also feature a "sealed" lithium battery. These batteries are specialist components which are designed to not be removed or need replacing by the user, and have been tested by the alarm manufacturer to ensure they last for the lifetime of the alarm.

Please note: the actual lifetime of your batteries depends on how often the alarms are tested or activated, as sounding the alarm draws more power than when the alarms are "waiting" to detect fire. You should also read your alarm's manual to make sure you only use the recommended types and brands of batteries, as failing to follow these instructions may cause the alarm to malfunction, not alerting you in the event of a fire, and might also invalidate the warranty.

Q. is there a different alarm sound for optical and heat sensors to tell you the difference in what kind of fire it is?

There is only one alarm sound type when a fire is detected, when interconnected all smoke and heat alarms will sound. However only the triggered alarm will have a rapidly flashing red indicator.

Pricing & Availability

Model Stock Price
SW1-R Optical Smoke Alarm
Product Code: FASW1R
Stock Level:
More than 20 in stock Expected dispatch: Tomorrow

£16.55 inc VAT

£13.79 ex VAT

HW1-R Heat Alarm
Product Code: FAHW1R
Stock Level:
More than 20 in stock Expected dispatch: Tomorrow

£21.83 inc VAT

£18.19 ex VAT

Delivery Options

The following delivery options are available on this product.

Economy Delivery

£4.99 inc VAT - Orders will be delivered in 3-5 working days by Hermes

Express Delivery

£8.10 inc VAT - Orders will be delivered in 1-2 working days by Hermes

Customer Reviews

10 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: J D

Easy installed

Published on: 1st November 2021

Rating: 5 / 5 Stars

Reviewed by: J T

Looks good easy to install and works well.

Published on: 12th June 2021

Rating: 5 / 5 Stars

Reviewed by: I K

super smoke alarms great price all fitted and interlink together due to regs in Scotland would buy again great service

Published on: 14th February 2021

Rating: 5 / 5 Stars

Reviewed by: I K

super heat alarm all working and interlinked great price great service would buy again suitable for new regs in Scotland

Published on: 14th February 2021

Rating: 4 / 5 Stars

Reviewed by: D N

Fit for purpose

Published on: 23rd July 2020

Rating: 5 / 5 Stars

Reviewed by: T L

The service offered was excellent. My smoke alarms arrived in good time. They were relatively simple to fit and look very nice. I particularly like the reminder service offered for testing the alarms. Would highly recommend.

Published on: 25th August 2019

Rating: 5 / 5 Stars

Reviewed by: N L

Great product, easy to install and works perfectly Easy to install, no problems

Published on: 19th April 2019

Rating: 5 / 5 Stars

Reviewed by: D L

Good product and service

Published on: 5th April 2019

Rating: 4 / 5 Stars

Reviewed by: S B

They look good Which said they are the best?

Published on: 2nd April 2019

Looking for more information?

If you have any questions or would like more information about this product you can ask one of our specialists.

Direct Telephone 01507 464181