Mains Powered Optical Smoke Alarm with Back-Up Battery - Kidde Firex KF20
Product Overview
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.
Interlink
Carbon Monoxide Alarms
Compatible Alarms
Technical Data
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.
- 230V mains powered optical smoke alarm
- Optional alkaline or rechargeable lithium back-up battery versions
- Up to 70% less energy consumption compared to previous Firex models
- 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: 2019 Grade D1 (lithium) or Grade D2 (alkaline)
- CE marked
- LED indicator
- 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
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
|
|
Model Number
|
Type of unit
|
Type of interlink
|
|
KE4MCO
|
CO Detector with Rechargeable Lithium Cell |
Hard wire interlink
|
|
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 |
|
||||
|---|---|---|---|---|---|
| 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 |
Pricing & Availability
| 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 |
Delivery Options
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