White FireAngel FA8620BW-R smoke alarm, circular with vented sides and central button.
Side view of FA8620BW-R: a white, vented, wall-mountable rectangular device.
FA8720BW-R smoke detector on a kitchen ceiling with white cupboards and lights.
Smartphone showing FA8620BW-R export report screen for Bluetooth diagnostics and downloads.
Young boy sleeps under striped sheets, FA8620BW-R resting on his pillow.
FA8620BW-R ceiling sensor in bedroom showing Night sensing overlay.
FA8620BW-R uses recycled plastics, spotlighting its environmental benefits in a close-up view.
Pair of FA8620BW-R alarms linked by a blue dashed line, indicating Bluetooth connexion.

FA8720BW-R

FA8720BW-R FireAngel One Smart BLE Heat Alarm

Heat alarm 5 Year Warranty Sealed battery Bluetooth UltraSense™ technology

Advanced heat detection with intelligent wireless interconnectivity

The FireAngel One Smart BLE Heat Alarm provides intelligent heat detection for connected home protection.

Designed for areas where smoke alarms aren’t suitable, the FireAngel One Smart BLE Heat Alarm delivers reliable Class A1 heat detection with a rapid response to real fire conditions.

Bluetooth® connectivity makes it quick and easy to connect compatible FireAngel One devices, creating a smarter home safety system that’s simple to set up and designed to grow with you.

Built-in diagnostics, supported by the Angel Connect app, help keep your alarm performing at its best, while Sleep Easy™ reduces night-time disruption by temporarily silencing low battery notifications overnight.

With a premium 10-year sealed lithium battery and optional gateway connectivity, FireAngel One provides connected protection that’s ready for today and built for the future.

Includes adhesive pad for easy installation.

118mm (diameter) x 44mm (depth)

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£23.80 £28.00

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The FireAngel One Smart BLE Heat Alarm provides intelligent heat detection for connected home protection.

Family of four on sofa smiling at a mobile, with FA8620BW-R product visible.

Scan. Connect. Protect.

FireAngel One is designed to make protecting your home feel effortless. A unified, connected system that can grow with your needs, helping to keep you and the people you love protected.

Installation & setup

Get the help and support you need to easily set up and install your FireAngel alarm for instant protection.

Installation guide

Installation guide

Get set up in minutes with simple step-by-step instructions

Build a network

Build a network

Keep your alarm performing reliably with quick, easy checks

Resources

To ensure you install the right alarm for your home, and one that's compliant with your local fire regulations, review our manual and data sheet or get in touch with our customer service team.

Product manual

Product manual

Download the full manual to get the most from your alarm

Datasheet

Datasheet

View the technical specifications and key product details

For home safety you can trust

Reliable detection where it matters most.

Designed for kitchens and other areas where smoke alarms may not be suitable, Class A1 heat detection responds rapidly to significant rises in temperature, helping to protect your home from fire.

Bluetooth® connectivity

Pair compatible FireAngel One devices in minutes to create a connected home safety system that's designed to grow with you.

Know your protection is working

Through Bluetooth®, run simple device checks and diagnostics to help keep your FireAngel One system performing at its best.

Rest easy through the night

Sleep Easy™ temporarily silence low battery notifications overnight and be reminded to replace the batteries the following day.

Made with recycled plastic

Manufactured using recycled plastic as part of our commitment to creating more sustainable home safety solutions.

Where to install your heat alarm

Installing a heat alarm in the right location is an important part of creating a complete home fire safety system. The FireAngel One Smart BLE Heat Alarm is designed for installation in kitchens and garages, where everyday cooking fumes, steam or dust can make smoke alarms unsuitable. Together with compatible FireAngel One smoke and carbon monoxide alarms, it helps provide comprehensive protection throughout your property.

Suitable for houses, flats, bungalows, maisonettes, caravans and motorhomes, FireAngel One heat alarms can be interconnected with up to 20 compatible FireAngel One devices using Bluetooth® technology. If one interconnected alarm detects a fire, every connected alarm sounds, helping to alert everyone in the property more quickly.

For even greater connectivity, FireAngel One can be paired with an optional gateway, enabling smart home integration and remote notifications through the Angel Connect app. This gives you greater visibility of your home’s safety, whether you’re at home or away.

Keeping your home safe from fire is essential, and having the right alarms correctly installed is the first step in protecting your family. See our complete alarm installation guide for full positioning advice.

Compliant and certified for safety

The FireAngel One Smart BLE Heat Alarm is certified to BS 5446-2:2003, the British Standard for domestic heat alarms. Independently tested and certified by SGS, a UKAS-accredited (ISO/IEC 17065) third-party certification body, it provides confidence that the alarm meets recognised standards for safety, quality and performance.

BS 5446-2:2003 certified

Meets the British Standard for heat alarms, ensuring reliable fire detection for domestic properties.

Independently tested and SGS certified

Certified by SGS, a UKAS-accredited (ISO/IEC 17065) third-party certification body, demonstrating compliance with recognised harmonised safety standards through independent testing and assessment.

CE compliant

Complies with UK and European product safety requirements, giving you confidence in the quality, safety and performance of your FireAngel One heat alarm.

What's in the box?

FA8620BW-R kit has alarm, base plate, screws, wall plugs, and adhesive pad included.

Reviews from our customers

Related FAQs

You will need to download the Angel Connect app, which is available for IOS and Android devices. Ensure you have set yourself an account up, before trying to interlink devices.

Tap ‘Add device’, which will appear on the homepage of the app. Here, you can add a Gateway or add standalone devices and select the device from a dropdown menu.

You will then need to pair your devices; this can be done by pressing the Test button three times, and the app will connect to the device and complete set up.

Wait for the success message before leaving the page.

Find out here how to manage FireAngel One from your phone.

FireAngel One devices have two pairing modes: Primary mode, indicated by a fast-flashing red LED, and Secondary mode, indicated by a slow-flashing red LED.

To manually interlink your FireAngel One alarms:

  1. Set the first alarm to Secondary mode. Install the alarm onto its baseplate, then press the Test button three times in quick succession. The red LED will illuminate to indicate that the device is in Secondary mode.
  2. Add another alarm to the network. Ensure the second alarm is fitted to its baseplate, then press its Test button five times in quick succession. The red LED will remain illuminated while the device searches for the network.
  3. Confirm the connection. When the devices have located each other, the red LED will begin to flash. Both devices will chirp once to confirm that they have successfully interconnected.
  4. Add additional alarms. You can connect up to 20 FireAngel One devices on a single network. To add further alarms, repeat the pairing process for each device.

Press the test/hush button once for a quiet self-test at reduced volume, at least 10dB below the full alarm. Double-press for a full-volume 85dB test. Test at least once a month. See our full guide to maintaining and testing your heat alarm for more detail.

If the battery stops working, you will need to replace them if they are removable or else you may need to replace the entire device. Please check with customer support if you feel there is a fault with the battery.

If you have a static caravan, CO alarms should be mounted to the wall rather than free standing. Most of our sealed battery smoke and heat alarms are compliant for motorhomes but contact customer support if you’re unsure.

The warranty period is usually between 3-5 years but check your alarm packaging and manual for up to date information. Remember: keep hold of your receipt to make sure your warranty is valid.

A Heat Alarm is perfect for detecting fires like those caused by faulty white goods, as they usually create a ‘blast’ of fire that’s very hot. Heat Alarms won’t false alarm to a dusty or humid room which makes it perfect for kitchens, utility rooms and garages where these items are usually found.

See all faqs

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Got a burning question? Get in touch

If you can't find what your looking for on our blogs and looking for further guidance and advice, our UK-based Customer Support team are on hand all week from 8:30am until 5:30pm, they can answer any further queries you may have on our products, solutions or services.