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Mains Powered Optical Smoke Alarm with Back-up Battery - Kidde Firex KF2

Discontinued Product

This product has been discontinued.

alternative product

Mains Powered Optical Smoke Alarm with Back-Up Battery - Kidde Firex KF20

  • Power: Mains powered with battery backup
  • Backup Battery: 9V alkaline or self-charging longlife lithium backup options
  • Warranty: 6 year warranty
  • Silence feature for Low Battery Chirp
  • Interlinks via cable with up to 24 alarms
  • Suitable for BS 5839-6: 2019 Grade D1 or D2
  • Kitemarked to BS EN 14604: 2005
  • Also suitable for both the Welsh and Scottish 2022 legislation

£21.00 inc VAT

£17.50 ex VAT

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Product Overview
Kidde Firex KF2 and KF2R's are mains powered, interlinking optical smoke alarms. The KF2 has an alkaline battery back-up and the KF2R, a rechargeable lithium battery back-up.  The units are hard wired and can be interlinked with other units from the series to create all round fire protection within the home.
  • 230V mains powered optical smoke alarm
  • Optional alkaline or rechargeable lithium back-up battery versions
  • 6 year warranty
  • A maximum of 24 units can be interlinked via signal cable
  • Kitemarked to BS EN 14604:2005 - view the certificate
  • Suitable for installations complying to BS 5839-6: 2013 Grade D, E and F
  • CE marked
  • LED indicator
  • Test / Hush button
  • Low battery warning chirp
  • Supplied with dust cover (to protect unit temporarily if you carry out dusty work)

Please Note: The Kidde Firex KF2 (previously Kidde 4973) and KF2R (previously Kidde 4985) are replacements for the Kidde 2239HI and 2239HILLs and can still be interlinked, however the new models cannot be used on the same base plates and use different connector blocks.
Interlink

The table below shows all the units that can interlink with the KF2 and KF2R.

Alarms from the same series
Model Number
Type of unit
Type of interlink
Optical Alarm
Hard wire interlink
Optical Alarm with Rechargeable Lithium Cell
Hard wire interlink
Heat Alarm
Hard wire interlink
Heat Alarm with Rechargeable Lithium Cell
Hard wire interlink
Ionisation Alarm
Hard wire interlink
Ionisation Alarm with Rechargeable Lithium Cell
Hard wire interlink
Carbon Monoxide Alarms
Model Number
Type of unit
Type of interlink
CO Detector with Rechargeable Lithium Cell
Hard wire interlink
Compatible Alarms
Model Number
Type of unit
Type of interlink
KE1239HI
Ionisation Alarm with Alkaline Battery
Hard wire interlink
KE1239HILL
Ionisation Alarm with Lithium Battery
Hard wire interlink
KE2239HI
Optical Alarm with Alkaline Battery
Hard wire interlink
KE2239HILL
Optical Alarm with Lithium Battery
Hard wire interlink
KE3239HI
Heat Alarm with Alkaline Battery
Hard wire interlink
KE3239HILL
Heat Alarm with Lithium Battery
Hard wire interlink
I240C
Ionisation Alarm with Alkaline Battery
Hard wire interlink
PADC240
Optical Alarm with Alkaline Battery
Hard wire interlink
KE4973
Optical Alarm with Alkaline Battery
Hard wire interlink
KE4985
Optical Alarm with Lithium Battery
Hard wire interlink
KE4899
Heat Alarm with Alkaline Battery
Hard wire interlink
KE4892
Heat Alarm with Lithium Battery
Hard wire interlink
KE4870
Ionisation Alarm with Alkaline Battery
Hard wire interlink
KE4881
Ionisation Alarm with Lithium Battery
Hard wire interlink
Technical Data
Product Code

Kidde KF2 - Alkaline Battery Backup:  KEKF2

Kidde KF2R - Rechargeable Lithium Battery Backup:  KEKF2R

Brand Kidde
Weight

KEKF2: 0.4kg

KEKF2R: 0.4kg

Product Datasheets

Customer Reviews

19 customers have given this product an overall rating of 4.6 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:

NO MORE ANNOYING ALARMS FROM KITCHEN SMELLS CUSTOMER SERVICE RECOMMENDED THIS OPTICAL ALARM FOR MY HALL, AS PREVIOUS ALARM AWAYS GOING OFF WITH COOKING SMELLS FROM KITCHEN.EXCELLENT ADVICE, THANK YOU

Published on: 25th September 2015

Rating: 4 / 5 Stars

Reviewed by:

Good replacement to date

Published on: 25th September 2015

Rating: 4 / 5 Stars

Reviewed by:

Good quality, easy to use slightly expensive

Published on: 26th June 2015

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