Kidde Firex Mains Powered Smoke Alarms with Alkaline Back-up Battery KF Series
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Kidde Firex Mains Powered Smoke Alarms with Alkaline Back-up Battery KF Series

19 Customer Reviews
From: £14.79 ex VAT
£17.75 inc VAT
Product Overview

The updated Kidde Firex range of smoke and heat alarms are mains powered, interlinking units that now use up to 70% less energy than previous Firex models. Hard-wired with alkaline back-up batteries, these alarms can be interlinked with other units from the series to create all round fire protection within the home; when one alarm detects smoke/heat and sounds, all units will sound. Installing the right sensor types in your property gives you the fastest possible response time with the minimum number of false alarms.

  • Mains powered with alkaline back-up battery
  • Suitable for installations complying to BS 5839-6: 2013 Grade D, E and F
  • Kitemarked to BS EN 14604:2005 and CE marked
  • 6 year warranty
  • A maximum of 24 units can be interlinked via signal cable
  • Neat slimline design
  • 230V hard-wired smoke alarm
  • Up 70% less energy consumption compared to previous Firex models
  • LED display
  • Test/Hush button
  • Low battery warning chirp - can be silenced for 8 hours
  • Supplied with dust cover (to protect unit temporarily if you carry out dusty work)
  • Dimensions (HxDia.): 38x133mm

Please Note: The Kidde KF Firex models are replacements for the older Firex 4000 series, Kidde 9HI and Kidde 9HILLs and can 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 KF10, KF20 and KF30.

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
KEKF2
 Optical Alarm
Hard wire interlink
KEKF2R
 Optical Alarm with Rechargeable Lithium Cell
Hard wire interlink
KEKF3
 Heat Alarm
Hard wire interlink
KEKF3R
 Heat Alarm with Rechargeable Lithium Cell
Hard wire interlink
KEKF1
 Ionisation Alarm
Hard wire interlink
KEKF1R
 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

Technical Data

This is the technical data for the Kidde Firex Mains Powered Smoke Alarms with Alkaline Back-up Battery KF Series.

Dimensions (HxDia) 39x133mm
Sound Output 85dB (minimum) at 3m
Temperature Range 0° to +40°C
Back-Up Battery 9V Alkaline
Humidity Range Up to 93% Relative Humidity (RH)

Product Datasheets

The following datasheets are available for this product.

Pricing & Availablity

Model Stock Price Weight
Ionisation Alarm with Alkaline Back-Up Battery - (KF10)
Product Code: KEKF10 		Stock Level:
More than 20 in stock
Price:

£14.79 ex VAT

£17.75 inc VAT

 Weight:
0.40kg
Optical Alarm with Alkaline Back-Up Battery - (KF20)
Product Code: KEKF20 		Stock Level:
16 in stock
Price:

£19.99 ex VAT

£23.99 inc VAT

 Weight:
0.40kg
Heat Alarm with Alkaline Back-Up Battery - (KF30)
Product Code: KEKF30 		Stock Level:
More than 20 in stock
Price:

£23.99 ex VAT

£28.79 inc VAT

 Weight:
0.40kg

Customer Reviews

19 customers have rated this product and it has an overall rating of 4.8 out of 5

All our reviews are written by real customers that have purchased this product from us and are published without modification.

4 / 5 Stars

Reviewed by: DS

Good product.

Published on: 15th August 2017

5 / 5 Stars

Reviewed by: KM

easy to install Replaced older alarms that had discoloured with age

Published on: 19th March 2017

5 / 5 Stars

Reviewed by: HC

Easily fitted and working perfectly

Published on: 14th March 2017

5 / 5 Stars

Reviewed by: PW

Great product excellent service

Published on: 15th December 2016

4 / 5 Stars

Reviewed by: AS

Perfect for the job

Published on: 8th November 2016

5 / 5 Stars

Reviewed by: FR

This was a replacement for the existing alarm and was very easy to fit onto the original backplate.

Published on: 23rd October 2016

5 / 5 Stars

Reviewed by: FR

This was a replacement for the existing alarm and was very easy to fit onto the original backplate.

Published on: 23rd October 2016

4 / 5 Stars

Reviewed by: CM

Very pleased with alarm. Feel safe in home with this smoke alarm.

Published on: 29th September 2016

5 / 5 Stars

Reviewed by: NL

good

Published on: 28th August 2016

5 / 5 Stars

Reviewed by: NL

good

Published on: 28th August 2016

5 / 5 Stars

Reviewed by: SJ

it test ok

Published on: 14th May 2016

5 / 5 Stars

Reviewed by: SJ

had no false triggering so thats good.

Published on: 14th May 2016

5 / 5 Stars

Reviewed by: RB

Nice neat smoke alarms at a great price.

Published on: 3rd May 2016

5 / 5 Stars

Reviewed by: RB

Nice neat smoke alarms for a great price.

Published on: 3rd May 2016

5 / 5 Stars

Reviewed by: JA

Quality product Timely delivery. Very good quality product. Would highly recommend

Published on: 1st April 2016

5 / 5 Stars

Reviewed by: RG

good quality, easy to fit

Published on: 21st March 2016

5 / 5 Stars

Reviewed by: AM

Well made. Easy to install. Works fine The service from Safelincs pre sale was first rate and the products arrived on time and well packed.

Published on: 14th March 2016

5 / 5 Stars

Reviewed by: PF

Perfectly replaced old & outdated smoke alarm

Published on: 6th March 2016

4 / 5 Stars

Reviewed by: MT

good smoke alarms and items arrived quickly

Published on: 28th February 2016

Show All

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Delivery Options

The following delivery options are available on this product.

Economy Delivery

Delivered in 3-7 working days by Royal Mail £3.90 ex VAT - More info

Next Day Delivery

Delivered the next working day by UK Mail from £6.50 ex VAT - More info

For delivery on order within

Delivery Options

The following delivery options are available on this product.

Economy Delivery

Delivered in 3-7 working days by Royal Mail £3.90 ex VAT - More info

Next Day Delivery

Delivered the next working day by UK Mail from £6.50 ex VAT - More info

For delivery on order within

Delivery Options

The following delivery options are available on this product.

Economy Delivery

Delivered in 3-7 working days by Royal Mail £3.90 ex VAT - More info

Next Day Delivery

Delivered the next working day by UK Mail from £6.50 ex VAT - More info

For delivery on order within

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