SKU: 36793872653

Kidde KF31R Sentry Mains Powered Heat Alarm with Sealed-In Rechargeable Lithium Battery Back-Up c/w Quick Fit Base

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Description

Kidde KF31R Sentry Mains Powered Heat Alarm with Sealed-In Rechargeable Lithium Battery Back-Up c/w Quick Fit BaseKidde KF31R Sentry Mains Powered Heat Alarm with Rechargeable Lithium Battery Back Up The Kidde KF31R Sentry Heat Alarm is a mains powered interconnectable heat detector designed for reliable fire protection in kitchens, garages, loft spaces and other areas where smoke alarms may be unsuitable. Using a thermistor heat sensor, the KF31R quickly detects dangerous increases in temperature while helping to reduce nuisance alarms caused by steam, dust or

Kidde KF31R Sentry Mains Powered Heat Alarm with Rechargeable Lithium Battery Back-Up

The Kidde KF31R Sentry Heat Alarm is a mains-powered interconnectable heat detector designed for reliable fire protection in kitchens, garages, loft spaces and other areas where smoke alarms may be unsuitable. Using a thermistor heat sensor, the KF31R quickly detects dangerous increases in temperature while helping to reduce nuisance alarms caused by steam, dust or cooking fumes.

Featuring a sealed rechargeable lithium battery back-up, the alarm continues to provide protection during power outages without requiring battery replacement. The KF31R can also be interconnected with up to 23 compatible Kidde FIREX smoke, heat and carbon monoxide alarms, ensuring all connected alarms sound simultaneously when danger is detected.

Designed for straightforward installation, the alarm includes Kidde’s Quick-Fit Slide-On Base for faster fitting and integrated cable management for tidy, secure wiring. The 150mm flared base also provides a clean finish when replacing older or larger alarms.

Key Features

  • Mains-powered heat alarm with sealed rechargeable lithium battery back-up
  • Thermistor heat sensor for dependable heat detection
  • Interconnects with up to 23 compatible Kidde FIREX alarms
  • Quick-Fit Slide-On Base for rapid installation
  • 150mm flared base plate for clean retrofitting
  • Integrated cable management for organised wiring
  • Alarm memory identifies the activated alarm within the network
  • Combined Test/Hush button for testing and temporary silencing
  • Automatic reset after alarm activation
  • Tamper-resistant locking mechanism for added safety
  • Suitable for kitchens, garages, lofts and humid environments
  • Fully compatible with Kidde FIREX smoke, heat and CO alarms
  • 10-year warranty including rechargeable battery

Ideal Applications

The Kidde KF31R heat alarm is ideal for installation in:

  • Kitchens
  • Garages
  • Loft spaces
  • Utility rooms
  • Residential Grade D1 fire alarm systems

Heat alarms are particularly suitable for areas where optical smoke alarms may be prone to nuisance triggering from steam, fumes or airborne particles.

Technical Specifications

  • Model: KF31R
  • Power Supply: 230V mains with sealed rechargeable lithium battery back-up
  • Sensor Type: Thermistor (thermal resistor) heat sensor
  • Alarm Volume: Minimum 85dB at 3 metres
  • Alarm Frequency: 3.2 kHz typical
  • Interconnectivity: Up to 23 compatible alarms
  • Alarm Grade: D1
  • Approvals: BSI certified to BS 5446 Part 2:2003
  • Dimensions: 150mm x 66mm
  • Weight: 245g including battery
  • Operating Temperature: -10°C to +40°C
  • Humidity Range: Up to 93% RH non-condensing
  • Warranty: 10 Years including battery

Compliance & Installation

The Kidde KF31R complies with UK Building Regulations and BS 5839 Part 6 standards for Grade D domestic fire alarm systems. Installation should be completed by a qualified electrician. Heat alarms are recommended for kitchens and other environments where smoke alarms may be affected by steam, dust or fumes.

Downloads

Data Sheet:
Download Data Sheet

Instruction Manual:
Download Instruction Manual

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Exchange/Return Notes
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SKU: 36793872653

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dkar3145
West Palm Beach, US
★★★★★ 4
Four Stars
Format: Paperback
interesting read.
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Reviewed in the United States on November 21, 2015
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Amazon Customer
Lowell, US
★★★★★ 5
A Useful Tool for Those Interested in Creating Accumulators and Manifesting Orgone Energy
Format: Paperback
This book goes into more detail about how orgone behaves and how to apply the science of accumulators. This book shows you how to build upon the knowledge of Wilhelm Reich's discovery and creations. This will also teach you how you can construct your own orgone accumulating devices and how to direct and use the energy for different ideas. There are photographs and illustrations to show you how this can be done.
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Reviewed in the United States on December 28, 2016
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Amazon Customer
Cuba, US
★★★★★ 5
Excellent summary of a major scientific breakthrough that turns many ...
Excellent summary of a major scientific breakthrough that turns many accepted scientific paradigms upside down. Dr DeMeo's brilliant work allows the layman to grasp a completely new cosmology with direct and practical applications in daily life. Also Dr. DeMeo's brilliant work allows scientists to rethink those tenets at the foundation of current scientific worldviews and transcend those paradigms which are holding back real progress.Cheers to James DeMeo and, of course, Wilhem Reich's genius and unflinching courage, one more of history's crucified Jesuses. Gaston Cornu-Labat, MD
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Reviewed in the United States on September 12, 2016
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Kindle Customer on the Lake
Waukegan, US
★★★★★ 5
empowers readers to take their first confident steps toward change
Format: Hardcover
In Drama Free, therapist and bestselling author Nedra Glover Tawwab addresses the emotionally charged dynamics of dysfunctional family relationships with clarity and compassion. Rooted in her experience as a licensed therapist, Tawwab outlines the ways that unhealthy patterns—such as manipulation, enmeshment, neglect, or boundary violations—can shape our adult lives. Through digestible chapters and relatable examples, she encourages readers to recognize harmful dynamics and begin the work of detachment and healing. This is not a textbook, but rather a conversation starter, meant to normalize difficult realizations and introduce healthier ways of engaging with family. The book’s strength lies in its practicality. Tawwab’s tone is warm yet firm, offering readers common-sense strategies for setting boundaries, reducing contact when necessary, and managing guilt associated with stepping away from toxic behaviors. While she does not go into deep psychological theory, her approach is grounded in self-awareness and personal accountability. Readers are encouraged to name their experiences, resist minimization, and begin advocating for themselves—even if that means redefining what family connection should look like. The key takeaway from Drama Free is that peace is a choice, and one we are allowed to make—even when it means going against cultural or familial expectations. Tawwab provides a solid foundation for anyone beginning the journey of healing from family dysfunction. Though the book may not satisfy those looking for an in-depth clinical guide, it offers enough wisdom and structure to empower readers to take their first confident steps toward change. It's an accessible and affirming read that underscores the power of healthy boundaries and self-respect.
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Reviewed in the United States on June 14, 2025
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Caro Montes
West Palm Beach, US
★★★★★ 5
Highly Recommend to anyone going through family conflicts
Format: Hardcover
I love all of Nedra’s books. I highly recommend this book to anyone who has family conflicts that are taking a toll on them. It teaches you how to set proper boundaries and understand the situation and your feelings.
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Reviewed in the United States on May 25, 2026

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