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Mains Powered Ionisation Smoke Alarm with Back-up Battery - Kidde Firex KF10

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

The updated Kidde Firex KF10 and KF10R alarms are mains powered, interlinking ionisation smoke alarms that use up to 70% less energy than previous Firex models. The units are hard wired and can be interlinked with other units from the series to create all round fire protection within the home.

  • Power: Mains powered ionisation alarm with battery backup
  • Backup Battery: Alkaline or self-charging lithium backup battery
  • Warranty: 6 year warranty
  • Up to 70% lower energy consumption compared to previous Firex models
  • A maximum of 24 units can be interlinked via signal cable
  • Certified to BS EN 14604: 2005 - view the certificate
  • Suitable for installations complying to BS 5839-6: 2019 Grade D1 (KF10R) or Grade D2 (KF10)
  • CE marked
  • Neat slimline design
  • 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)
  • Supplied with fixings; 2 x screws and 2 x rawl plugs
  • This alarm is also suitable for the updated 2022 Scottish legislation for fire alarms in homes

Please note: The Kidde Firex KF10 (previously KF1 / 4870 / 1240C) and KF10R (previously KF1R / 4881 / IAR230C) are replacements for the Kidde 123/9HI, 123/9HILL and 1275H series and can be electrically interlinked. However, the new models cannot be used on the old base plates for the 123/9HI, 123/9HILL and 1275H series as they use different style connector blocks. This means that base plates must be swapped over on those stated models and connectors need to be replaced.

Interlink

The table below shows all the units that can interlink with the KEKF10 and KEKF10R.

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
Product Code

Kidde KF10 - Alkaline Battery Backup:  KEKF10

Kidde KF10R - Rechargeable Lithium Battery Backup:  KEKF10R

Brand Kidde
Back-Up Battery

KF10: 9V Alkaline

KF10R: Self-Charging Lithium

Dimensions (HxDia)

38x138mm

Operating Temperature

0° to +40°C

Relative Humidity

Up to 93% Relative Humidity (RH)

Sound Output

85dB

Warranty

6 Years

Weight 0.40kg
Product Datasheets

Customer Reviews

43 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: 3 / 5 Stars

Reviewed by: D D

Thankfully Compatible I inherited a house with old 323/9HILL and 123/9HI alarms, which I had to partially replace. Although both of these are officially obsolete, the KF10 is fortunately compatible with the synchronisation circuit that connects them all. Sadly, the physical connection is different, so you need the new (ceiling) baseplate, and the connector design is also less elegant, as it takes up far too much space where the cables need to go (i.e. it&#039s a vertical rather than the horizontal fit of the older models). It certainly works (very loud, although a bit too sensitive for my liking) and the LEDs are a bit bright, but they're OK.

Published on: 1st May 2021

Rating: 5 / 5 Stars

Reviewed by: J E

Product as described. However, I had to wait about four weeks for this item to arrive which meant that my son was unable to fit the alarms before he went back to England. Disappointed I was not informed that delivery would not take place until all items could be delivered together.

Published on: 8th November 2020

Rating: 5 / 5 Stars

Reviewed by:

So far so good, and would recommend. East to install!

Published on: 29th May 2020

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