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Kidde Firex KF3 & KF3R Heat Alarms

  Single 'Hush' and 'Test' button
  C hoice of sealed-in rechargeable (three Panasonic lithium cells) or loose battery back-up ranges
  Cable harness type connection and interconnectable up to 24 units
  Supplied with base-plate

Kidde's Firex range are hardwired smoke and heat alarms which have a 6 year guarantee and are BSI kitemarked therefore ensuring that level of quality would be consistent as it provided by the world's largest manufacturer. Ionisation and optical models have proven to be exceptional alongside heat alarms for situations which would prove to be unsuitable for smoke alarms such as kitchens and garages.


Both models are mains powered with a built in back-up power, thereby complying with a given set of instructions and minimum requirements for the relevant building regulations for new housing i.e. Grade D (BS5839, Part 6).

These models are particularly used in humid or dusty environments wherein smoke alarms fail to operate satisfactorily. For example kitchens, boiler rooms, unconverted garages. They are triggered immediately when the ambient temperature reach 57 degC and must always be interconnected with smoke alarms from the same product range.

Kidde Firex KF3 & KF3R Heat Alarms


Ordering Information

KF3 - Heat AC with alkaline back-up

KF3LL - Heat AC with long-life lithium battery

KF3R - Heat AC with sealed-in rechargeable back-up

REMTH - Wired remote test & hush accessory switch for Firex

SMK23U - Universal surface mount kit for retrofits

SMK23RU - Same as SMK23U with 8 amp relay output pulse - switchable

SMK4896 - Firex only pattress

Please note - Product designs and specifications are subject to change without notice. The user is responsible for determining the suitability of this product.

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Miscellaneous Spares

Senator Range

Senator 25
Senator 100
Senator 200
Senator Ex
Senator Nano

Stratos Range

Stratos Ex
Stratos HSSD 2
Stratos Micra 25
Stratos Micra 100
Stratos Nano

Firex Range

KF1 & KF1R Ionisation Smoke Alarms
KF2 & KF2R Optical Smoke Alarms
KF3 & KF3R Heat Alarms

Slick Range

1SFW & 1SFWR Ionisation Smoke Alarms
2SFW & 2SFWR Optical Smoke Alarms
3SFW & 3SFWR Fast-Fit Heat Alarms

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