Heat Alarms

Heat alarms are the ideal choice for rooms where traditional smoke alarms might be triggered unnecessarily. Perfect for kitchens, garages and utility rooms, they detect unusual rises in temperature rather than smoke, making them a smart solution for avoiding false alarms.

By installing heat alarms in areas prone to steam, fumes or dust, you can extend protection to every corner of your home without compromise. It's an easy way to boost your home’s safety without the hassle of constant false alerts.

Front view of Kidde Firex mains powered heat alarm with alkaline battery backup showing circular white casing and central button

Mains Powered Heat Alarm with Back-Up Battery - Kidde Firex KF30

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Designed for kitchens and garages, the Kidde Firex KF30 is mains powered with a choice of alkaline or rechargeable lithium back-up batteries.

Interlinks with up to 24 units
Suitable for BS 5839-6: 2019 Grade D1 (lithium) or Grade D2 (alkaline) installations
Kitemarked and CE marked

4.7 out of 5 stars

From: £28.79 inc VAT

£23.99 ex VAT

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Kekf31 Kidde Firex Kf31 mains heat alarm with alkaline backup shown with packaging box and alarm unit

Mains Powered Heat Alarm with Back-Up Battery - Kidde Firex Sentry KF31

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Designed for use in kitchens and garages, the Kidde Firex KF31 is a mains-powered alarm with a choice of alkaline or rechargeable lithium backup batteries.

Capable of creating a system of up to 24 compatible units
Suitable for BS 5839-6: 2019 Grade D2 (alkaline) or Grade D1 (lithium) installations
Kitemarked, CE marked, and UKCA marked