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Kidde Firex KF30LL Mains Powered Heat Alarm with Longlife Lithium Back-Up Battery

Product Code: KF30LL

Customer Rating: 5 stars

Kidde KF30LL Mains Heat Alarm with Lithium Back-Up Battery Key Features

  • Mains powered thermal heat alarm
  • 9v longlife lithium back-up battery
  • Low profile and unobtrusive design
  • Can hard-wire interlink with up to 23 other mains powered Kidde alarms
  • Easily identify the source alarm on an interconnected system with the Alarm memory feature
  • 70% less energy consumption compared to previous Firex alarms
  • Supplied with a dust cover if being installed during building works
  • Supplied with fixings: 2 x screws and rawl plugs
  • Combined test/hush button allows for regular testing of the alarm and silencing false alarms
  • Low battery warning tone which can be silenced for up to 8 hours
  • Tamper-resistant locking device prevents unauthorised removal of the alarm without the use of a tool
  • Certified to BS EN14604:2005 and CE marked
  • 6 year warranty
  • Suitable for installation as part of a BS5839-6: 2019 Grade D2 system
  • Meets the requirements of the 2022 Scottish Legislation for fire alarms in homes

Product Information

The Kidde Firex KF30LL is a mains powered thermal heat alarm with a user replaceable 9v longlife lithium back-up battery, designed to last the full lifespan of the alarm. Heat alarms can be used in areas of the home which are humid or dusty where optical or ionisation smoke alarms may trigger false alarms such as in kitchens, loft spaces and garages.

The Kidde KF30LL can be hard-wire interlinked with up to 23 other Kidde mains powered alarms which will create an interconnected system where if one alarm is activated, all other connected alarms will sound.

The KF series alarms are vastly improved over previous Firex alarms, offering 70% lower energy consumption and an enhanced low profile design.

The Kidde KF30LL is kitemark certified to BS5446 Part 2: 2003, CE marked and has a 6 year warranty.

This alarm is suitable for installation as part of a BS5839-6: 2019 Grade D2 system.

What's Included?

  • 1 x Kidde KF30LL Heat Alarm
  • 1 x 9v Longlife Lithium Back-Up Battery
  • 2 x Screws
  • 2 x Rawl plugs
  • 1 x Instruction Manual

Interlink Compatibility

The KF30LL can be hard-wire interlinked with the following alarms, up to a maximum of 24 units on one circuit:

Model Number Device Type Type of Interlink
KF10 230v Ionisation Alarm with 9v Battery Hard-wire interlink
KF10LL 230v Ionisation Alarm with Longlife Lithium Battery Hard-wire interlink
KF10R 230v Ionisation Alarm with Rechargeable Lithium Battery Hard-wire interlink
KF20 230v Optical Alarm with 9v Battery Hard-wire interlink
KF20LL 230v Optical Alarm with Longlife Lithium Battery Hard-wire interlink
KF20R 230v Optical Alarm with Rechargeable Lithium Battery Hard-wire interlink
KF30 230v Heat Alarm with 9v Battery Hard-wire interlink
KF30LL 230v Heat Alarm with Longlife Lithium Battery Hard-wire interlink
KF30R 230v Heat Alarm with Rechargeable Lithium Battery Hard-wire interlink
4MCO 230v CO Alarm with Rechargeable Lithium Battery Hard-wire interlink
4MDCO 230v CO Alarm with Digital Display Screen Hard-wire interlink

Technical Details

Manufacturer: Kidde
Product Code: KF30LL
Approvals: BS 5446 Part 2: 2003
CE Marked
Product Weight: 231g
Sound Output: 85dB alarm at 3 metres
Dimensions: W:133mm H:133mm D:6mm
Power Supply: 230V mains powered
Back-Up Power Supply: 9V longlife lithium battery
Operating Temperature Range: 0ºC to +40ºC
Operating Humidity Range: Up to 93% RH non-condensing
Manufacturer's Warranty Period: 6 years

Customer Reviews

  • from East Kilbride Scotland Rating:5 stars

    Works well with kf20 smoke alarms when connected with mainmains supply independent circuit.

  • from East Kilbride, scotland Rating:5 stars

    Easy to install and test,works in tandem with kf20 smoke alarms when connected to mains supply, excellent product.¹

  • from Scotland Rating:4 stars

    Works well with My kidde KF20LL smoke alarm but please note you have to have both connected to mains to work the interlink.

Delivery Information

Returns & Refunds

£23.89 Ex Vat

£28.67 Inc Vat

In stock:In stock

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