SKU: 89560558488

Kidde KF31 Sentry Mains Powered Heat Alarm with 9V Alkaline Battery Back-Up c/w Quick Fit Base

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Description

Kidde KF31 Sentry Mains Powered Heat Alarm with 9V Alkaline Battery Back-Up c/w Quick Fit BaseKidde KF31 Sentry Mains Powered Interconnectable Heat Alarm with 9V Battery Back Up The Kidde KF31 Sentry Heat Alarm is a high performance mains powered heat detector designed for use in kitchens, garages, lofts and other areas where smoke alarms may be unsuitable. Featuring a reliable thermistor heat sensor, the KF31 responds quickly to dangerous rises in temperature while helping to minimise false alarms caused by cooking fumes, steam or dust. This

Kidde KF31 Sentry Mains Powered Interconnectable Heat Alarm with 9V Battery Back-Up

The Kidde KF31 Sentry Heat Alarm is a high-performance mains-powered heat detector designed for use in kitchens, garages, lofts and other areas where smoke alarms may be unsuitable. Featuring a reliable thermistor heat sensor, the KF31 responds quickly to dangerous rises in temperature while helping to minimise false alarms caused by cooking fumes, steam or dust.

This interconnectable heat alarm can be linked with up to 23 compatible Kidde FIREX smoke, heat and carbon monoxide alarms. When one connected alarm detects danger, all units sound simultaneously to provide enhanced protection throughout the property.

Supplied with Kidde’s Quick-Fit Slide-On Base, the KF31 allows for quicker and cleaner installation. The integrated cable management system keeps wiring organised, while the 150mm flared base plate provides a neat finish during retrofit installations.

Key Features

  • Mains-powered heat alarm with 9V alkaline battery back-up
  • Thermistor heat sensor for dependable temperature detection
  • Interconnects with up to 23 compatible Kidde FIREX alarms
  • Quick-Fit Slide-On Base for fast and simple installation
  • 150mm flared base for clean retrofitting of existing alarms
  • Integrated cable management for tidy wiring connections
  • Alarm memory identifies the activated unit within the network
  • Combined Test/Hush button for testing and silencing nuisance alarms
  • Automatic reset after activation
  • Tamper-resistant locking device prevents unauthorised removal
  • Suitable for kitchens, garages, lofts and dusty environments
  • Fully compatible with Kidde FIREX smoke, heat and CO alarms
  • 10-year manufacturer warranty

Ideal Applications

The Kidde KF31 heat alarm is ideal for locations where smoke alarms may trigger unnecessary alarms due to steam, dust or cooking fumes, including:

  • Kitchens
  • Garages
  • Loft spaces
  • Utility rooms
  • Residential properties requiring Grade D2 fire detection

Technical Specifications

  • Model: KF31
  • Power Supply: 230V mains with 9V alkaline 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: D2
  • Approvals: BSI certified to BS 5446 Part 2:2003
  • Dimensions: 150mm x 150mm x 66mm
  • Weight: 281g including battery
  • Operating Temperature: -10°C to +40°C
  • Humidity Range: Up to 93% RH non-condensing
  • Warranty: 10 Years

Compliance & Installation

The Kidde KF31 complies with UK Building Regulations and BS 5839 Part 6 requirements for Grade D domestic fire alarm systems. Installation should be carried out by a qualified electrician. Heat alarms are particularly recommended for kitchens and other areas where optical smoke alarms may be prone to nuisance triggering.

Downloads

Data Sheet:
Download Data Sheet

Instruction Manual:
Download 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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  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 89560558488

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4.3 ★★★★★
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Cydnei Bogard
Omaha, US
★★★★★ 5
5/5
Scent: Palo Santo, Size: 16 Fl Oz (Pack of 1)
absolutely love the Palo Santo Chemo Body Wash by Cremo. The scent is warm, woodsy, and slightly sweet without being overpowering. It smells clean but elevated — like a subtle, high-end cologne that lingers just enough after you shower. The lather is rich and creamy, and a small amount goes a long way. It leaves my skin feeling clean and moisturized without that tight, dry feeling some body washes cause. The fragrance lasts for hours, which I appreciate because it layers well with other products. If you like warm, earthy scents with depth, this is a must-try. I will definitely be repurchasing!
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Reviewed in the United States on February 24, 2026
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Analog Nation
Phoenix, US
★★★★★ 5
Nice body care need not cost a fortune.
Scent: Palo Santo, Size: 16 Fl Oz (Pack of 1)
The Cremo product line is a favorite and Palo Santo is one that tops the list for us. We like the Cremo body care line's execution, variety, quality, anti- elitist price and inclusive availability. Palo Santo is softly sweet with just enough cardamom spice and papyrus for a round, smooth aroma with no sharp edges to annoy those around you. Just enough of the Cremo body wash frangrance lingers to keep you feeling fresh all day. This product lathers nicely and is neither too heavy nor too thin to use with a traditional wash cloth, loofah, natural or synthetic sponge, pouf or bath brush. Cremo body wash makes a nice foot soak and hand wash too. We fill a bottle to keep by the kitchen and bathroom sinks. Our wish is that the company produces large, minimally packaged refills to spare the plastic. Until then, please reuse and / or recycle the containers. NOTE: When selecting fragrance, ignore marketing and wear what appeals to you. Treat gender, age, price category snobbery and other target market gimmicks as irrelevant. Wear / use what you like, and not because it is purported to be "exclusive", someone told you to or that you cannot possibly be cool / alluring / beautiful / handsome or appear wealthy or celebrity-adjacent without it.
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Reviewed in the United States on May 25, 2026
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Shyla
Lake Worth, US
★★★★★ 5
Add to Cart ❤️
Scent: Bourbon & Oak, Size: 16 Fl Oz (Pack of 1)
The scent is incredible — warm, slightly sweet bourbon with a rich oak finish. It smells high-end without being overpowering. It lingers just enough to notice but doesn’t clash with cologne. Performance-wise, it delivers. It cleans thoroughly without stripping and leaves hair soft and manageable instead of dry or heavy. For a 2-in-1, it actually conditions well — which isn’t always the case with combo products. I originally bought it as part of a gift set for my father, and he’s since had me repurchase it four times — so that says everything. If you like warm, masculine, slightly woody scents and want something that performs as good as it smells, this one truly hits the ball on the head. Definitely a repeat buy.
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Reviewed in the United States on February 28, 2026
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Natalie Fratz
West Palm Beach, US
★★★★★ 4
Husbands Favorite!
Scent: Bourbon & Oak, Size: 16 Fl Oz (Pack of 1)
This brand is my husband's favorite! He uses the shampoo/conditioner and the body wash. He says it lathers and suds up pretty well. The smell is great and lasts a good while. The only thing is he wishes it came in a bigger bottle.
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Reviewed in the United States on February 25, 2026
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Stephen K
Fort Morgan, US
★★★★★ 5
Next Level "Hotel" smells
Scent: Bourbon & Oak, Size: 16 Fl Oz (Pack of 1)
I have been searching for a shampoo that not only leaves my hair feeling clean, but also smells great. Cremo has frequently checked a lot of boxes, and this shampoo is no exception.I adore the bourbon and oak scent. Despite giving some hotel shampoo vibes, it smells great once in the air, and I feel good showering with it. It leaves my hair feeling clean and no oily, but still soft. I have thicker hair, but this works in easily. Bottle came perfect, no leaks! Only complaint is I would like a larger bottle with a pump to user easier in the shower!
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Reviewed in the United States on April 6, 2026

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