The Kidde Firex KF20 and KF20R alarms are a pair of mains powered optical smoke alarms that use up to 70% less energy than their predecessors and are capable of hardwire interlinking with up to 24 other compatible units. The KF20 is fitted with a replaceable alkaline back-up whilst the KF20R is fitted with a rechargeable lithium battery which is designed to last the life of the alarm.
Please Note: The Kidde Firex KF20 (previously Kidde 4973 / KF2) and KF20R (previously Kidde 4985 / KF2R) 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.
The table below shows all the units that can interlink with the KF20 and KF20R.
Alarms from the same series
Model Number
|
Type of unit
|
Type of interlink
|
KEKF20
|
Optical Alarm |
Hard wire interlink
|
KEKF20R
|
Optical Alarm with Rechargeable Lithium Cell |
Hard wire interlink
|
KEKF30
|
Heat Alarm |
Hard wire interlink
|
KEKF30R
|
Heat Alarm with Rechargeable Lithium Cell |
Hard wire interlink
|
KEKF10
|
Ionisation Alarm |
Hard wire interlink
|
KEKF10R
|
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
|
KE4MCO
|
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
|
Product Code |
Kidde KF20 - Alkaline Battery Backup: KEKF20-FAP Kidde KF20R - Rechargeable Lithium Battery Backup: KEKF20R-FAP |
---|---|
Brand | Kidde |
Back-Up Battery | KF20: 9V Alkaline KF20R: Longlife Lithium |
Dimensions (HxDia) | 39x133mm |
Operating Temperature | 0° to +40°C |
Sound Output | 85dB |
Weight | 0.28kg |
Product Datasheets |
Model | Stock | Price |
---|---|---|
Kidde KF20 - Alkaline Battery Backup Product Code: KEKF20-FAP |
Stock Level:
More than 20 in stock Expected dispatch: Today
|
Price:
£23.99 inc VAT £19.99 ex VAT |
Kidde KF20R - Rechargeable Lithium Battery Backup Product Code: KEKF20R-FAP |
Stock Level:
More than 20 in stock Expected dispatch: Today
|
Price:
£39.59 inc VAT £32.99 ex VAT |
The following delivery options are available on this product.
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