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Mains Powered Optical Smoke Alarm with Alkaline Back-up Battery - FireAngel SW1-R

Front view of fireangel mains powered optical smoke alarm alkaline battery backup showing test button and indicators
4.9 out of 5 stars

20+ In Stock

For dispatch today order within
15 Hrs 37 Mins
£21.71 inc VAT

£20.75 inc VAT

£17.29 ex VAT

Standard Delivery

Will usually be delivered in 2-3 working days

£4.20 inc VAT

Next Day Delivery

Will usually be delivered the next working day

£7.00 inc VAT

The FireAngel SW1-R optical smoke alarm is mains powered with a replaceable 9V back-up battery and large, central test and silence button. Two LED status indicators are positioned prominently on the alarm, one clearly showing whether or not mains power is active and the other will light up to indicate a fault or alarm when necessary. Up to 12 W1-R and W1-PF series alarms can be interlinked together via a dedicated cable, to provide full coverage and reliable warning of possible danger throughout the premises. To ensure that there is a back-up in case of a mains power failure, these alarms also feature a 'safety clip' which prevents them from being fitted to the base plate without a battery.

  • Power: 230V mains powered with backup battery
  • Backup Battery: 9V alkaline battery (included)
  • Warranty: 5 year manufacturer's warranty
  • Large, central test and silence button
  • Up to 12 W1 series alarms can be hard-wire interlinked within a single system, including:
  • Optical smoke detection technology – less prone to nuisance alarms than traditional ionisation sensors
  • Integrated 'safety clip' feature prevents them from being fitted without a battery
  • Suitable for installations
  • Kitemarked to
  • This alarm is also suitable for both the Welsh and Scottish updated 2022 legislation
Customer Reviews

Customer Reviews (21)

4.9 out of 5 stars

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

Reviewed by

N L

Published on

13th November 2025

Good product, easy to fit and use

I have used a number of these products and have been very happy with their quality and performance.

Rating: 5 / 5

Reviewed by

S S

Published on

9th October 2024

Easy to install , works perfectly

Rating: 5 / 5

Reviewed by

C C

Published on

2nd January 2024

seems fine so far

Rating: 5 / 5

Reviewed by

C C

Published on

2nd January 2024

seems fine so far

Rating: 5 / 5

Reviewed by

I S

Published on

27th November 2023

very satisfied

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Technical Data

Technical Data

Product Code FASW1R
Brand FireAngel
Back-Up Battery Type Alkaline
British Standard Grade Grade D2: Mains Powered (replaceable backup)
Colour White
Local Legislation Northern Ireland Legislation (2024)
Scottish Legislation (2022)
Welsh Legislation (2022)
Compliance BS EN 14604: 2005
BS 5839-6
Connection Wired
Display LED Indicators
Fixing Options Screws (included)
Installation Position Ceiling
Maximum Number of Linked Devices 12 Devices
Operating Temperature +5°C To +38°C
Positioning Bedrooms
Hallways
Living Rooms
Power Type Mains Powered (230V)
Recyclable Partially Recyclable
Relative Humidity 10% To 85%
Sensor Type Optical
Sound Level 85dB
Suitability Home
Warning Type Audible - Alarm Sounder
Warranty 5 Years
Dimensions (Unit)
  • Depth: 42mm
  • Diameter: 126mm
Weight 200g
Datasheets