SKU: 62252790937

Kidde Sentry 5x KF21 Optical Smoke & 1x KF31 Heat Alarm Kit Mains Powered with 9V Alkaline Battery Back-Up c/w Quick Fit Base

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Description

Kidde Sentry 5x KF21 Optical Smoke & 1x KF31 Heat Alarm Kit Mains Powered with 9V Alkaline Battery Back-Up c/w Quick Fit BaseKidde Sentry 5x KF21 Optical Smoke & 1x KF31 Heat Alarm Kit with 9V Battery Back Up The Kidde Sentry Alarm Kit combines five KF21 Optical Smoke Alarms and one KF31 Heat Alarm to provide complete fire detection coverage for larger homes and multi storey residential properties. Designed for mains powered installation, each alarm features a 9V alkaline battery back up and can be interconnected with up to 23 compatible Kidde FIREX alarms for dependable

Kidde Sentry 5x KF21 Optical Smoke & 1x KF31 Heat Alarm Kit with 9V Battery Back-Up

The Kidde Sentry Alarm Kit combines five KF21 Optical Smoke Alarms and one KF31 Heat Alarm to provide complete fire detection coverage for larger homes and multi-storey residential properties. Designed for mains-powered installation, each alarm features a 9V alkaline battery back-up and can be interconnected with up to 23 compatible Kidde FIREX alarms for dependable whole-home protection.

When one alarm detects danger, all connected alarms sound simultaneously, providing an early warning throughout the property. This makes the system ideal for improving fire safety across multiple rooms, floors and escape routes.

Each alarm is supplied with Kidde’s Quick-Fit Slide-On Base for fast and tidy installation. Integrated cable management helps maintain organised wiring, while the 150mm flared base plate provides a neat finish when retrofitting existing alarms.

Kit Contents

  • 5 x Kidde KF21 Optical Smoke Alarms
  • 1 x Kidde KF31 Heat Alarm

KF21 Optical Smoke Alarm Features

The Kidde KF21 optical smoke alarm is designed to detect slow, smouldering fires caused by furniture, electrical faults or cigarettes. Ideal for hallways, landings, bedrooms and living areas, the optical sensor provides reliable early fire detection.

  • Mains-powered optical smoke alarm with 9V alkaline battery back-up
  • Optical sensor with dust compensation and bug screen
  • Interconnects with up to 23 Kidde FIREX alarms
  • Alarm memory identifies the activated alarm
  • Combined Test/Hush button
  • Auto reset after activation
  • Tamper-resistant locking mechanism
  • Suitable for hallways, bedrooms, lofts and living rooms
  • BSI certified to BS EN14604:2005
  • 10-year warranty

KF31 Heat Alarm Features

The Kidde KF31 heat alarm is designed for kitchens, garages and loft spaces where smoke alarms may be unsuitable due to cooking fumes, steam or dust. The thermistor heat sensor provides dependable heat detection while reducing nuisance alarms.

  • Mains-powered heat alarm with 9V alkaline battery back-up
  • Thermistor heat sensor for reliable heat detection
  • Interconnects with up to 23 Kidde FIREX alarms
  • Alarm memory identifies the activated alarm
  • Combined Test/Hush button
  • Auto reset after activation
  • Tamper-resistant locking mechanism
  • Ideal for kitchens, garages and loft spaces
  • BSI certified to BS 5446 Part 2:2003
  • 10-year warranty

Key Benefits

  • Comprehensive smoke and heat alarm system for larger homes
  • Interlinked alarms provide whole-property warning when danger is detected
  • Quick-Fit bases for fast and clean installation
  • Integrated cable management for neat wiring
  • Suitable for compliance with UK Building Regulations
  • Grade D domestic fire alarm solution
  • Fully compatible with Kidde FIREX smoke, heat and CO alarms

Technical Specifications

KF21 Optical Smoke Alarm

  • Model: KF21
  • Power Supply: 230V mains with 9V alkaline battery back-up
  • Sensor Type: Optical
  • Alarm Volume: 85dB minimum at 3 metres
  • Dimensions: 150mm x 53mm
  • Weight: 295g
  • Operating Temperature: -10°C to +40°C
  • Warranty: 10 Years

KF31 Heat Alarm

  • Model: KF31
  • Power Supply: 230V mains with 9V alkaline battery back-up
  • Sensor Type: Thermistor heat sensor
  • Alarm Volume: 85dB minimum at 3 metres
  • Dimensions: 150mm x 150mm x 66mm
  • Weight: 281g
  • Operating Temperature: -10°C to +40°C
  • Warranty: 10 Years

Please Note: Alarms are supplied individually within the kit. Installation should be completed by a qualified electrician.

Downloads

KF21 Data Sheet:
Download KF21 Data Sheet

KF31 Data Sheet:
Download KF31 Data Sheet

KF21 Instruction Manual:
Download KF21 Instruction Manual

KF31 Instruction Manual:
Download KF31 Instruction Manual

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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Exchange/Return Notes
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SKU: 62252790937

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4.6 ★★★★★
Based on 14 reviews
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Product Reviews
D
Verified Purchase
David
Belleville, US
★★★★★ 5
museum quality
Format: Paperback
This is a kid's book, which is well illustrated, and useful. I have worked as a storyteller in schools. Kids of all backgrounds love native stories! All of Joseph Bruchac's books are high quality, museum pieces, just really good, the apotheosis [ideal] of what a storybook could be like. gives a very good description of the native lifeways around stories, and gives another view of native storytelling. is another book that gives you native context, by an author who also has native storybooks in print, including . Entering into native lifeways is not necessarily judgeable by white man culture, as shows. One thing one notices in native cultures is that they ask new questions, something like one sees in . I find native metaphysics to be similar to Quantum Mechanics. While not a native book, gives some ideas on how life would work, from that perspective. has stories about tricksters, which are not dissimilar to native stories. teachingdrum.org used to have a list of books of native stories, which is the most comprehensive I've seen. That is a nonprofit, and I have no connection with them, this cites the info resource only. All storytelling is fascinating. is one example of European stories about animals, which are not totally dissimilar. Stories are fascinating. If you want to entrance, train, entertain, educate, and improve children, nothing is faster or easier than storytelling.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 28, 2012
S
Verified Purchase
sswan
Pawtucket, US
★★★★★ 4
Great gift for a new teacher
Format: Paperback
Bought this book for a new teacher building up her book collection for her new classroom. It was a hit!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 24, 2021
A
Verified Purchase
Amazon Customer
Lexington, US
★★★★★ 5
Wonderful book for many reasons
Format: Paperback
I recommend this book for its story, cultural accuracy, and high interest action. First it is an exciting story of how conflicts arise and can be resolved with an exciting lacrosse game at the end. How cool is that? But the cultural and historical details make this a fascinating read for all ages. If you want to know about the lives of Native Americans in the New York area, written by a Native American, and put into an historically accurate story, this is a great read. I would recommend this as a high interest type of reader for middle school readers, one that would challenge them as well. The story could be about conflicts today, but the action is naturally more intense. If you are looking for an accurate portrait of Native American life, Bruchac is a wonderful author for you to choose. It is hard to find good books about northeastern Native Americans.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 12, 2013
A
Verified Purchase
Ashley and Jeremey
Cuba, US
★★★★★ 5
Engaging and educational
Format: Paperback
We really enjoyed this book as a family. My children were enthralled with characters and depiction of life in a Longhouse village. We supplemented this book with others about the Iroquois Nation and East Coast Native Americans for our homeschooling unit. It was a hit.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 3, 2023
W
Verified Purchase
Waddler
Waukegan, US
★★★★★ 5
Great Story about Native Americans before Europeans
Format: Paperback
I read this book with my kids (11,8) as part of our unit on Native Americans before colonization. They both really enjoyed it. It helped to humanize history for them and show them that although the cultural practices were different, the characters experienced some of the same feelings, relationship challenges, and personal struggles and triumphs that we experience today.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 31, 2022

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