Specification 10 Year Multi-Sensor Smoke Alarm

Mains Powered with 10 Year Lithium Battery Back-up

Designed with installers in mind, this compliant, flexible, easy to fit range delivers advanced sensing technology including Smart RF interlink ensuring your domestic installations are safe for years to come.


Grade D1 as recommended by BS 5839-6

5 Year Warranty

For peace of mind




Our datasheet and manual contain guidance on the product and the latest standards - if you have any additional questions, our team of experts can offer all the support you need, so get in touch!


Installation Support and Guidance


Specification Detail and Standards.




Wireless interlink made simple with Smart RF technology. Our Specification range allows installers to create a network of mains and/or battery powered alarms in seconds!

Build a Network

Interlink your alarms at the touch of a button.

Patented technology Thermoptek

Multi-Sensor alarms are recognised as an enhancement within British Standards BS 5839-6. Our unique patented Thermoptek technology combines the latest optical sensing with thermal enhancement for rapid detection to all fires.

For wireless interlink Smart RF Technology

When one alarm sounds, they all sound. Our Specification range features intelligent Smart RF technology - easily create a wireless or hybrid network of Smart RF mains and battery devices to protect the entire property.

Smart RF Technology
Adaptability & flexibility Futureproof Installations

Remain compliant to meet latest standards whilst delivering the ultimate level of protection that can be instantly enhanced as legislative requirements evolve, and cost-effectively adapted as the safety and welfare needs of tenants change.

Futureproof Installations

Did you know?

You can easily upgrade our Specification range to remotely monitor devices Find out more

Is your customer looking to manage their private portfolio, or does your customer want a smart alarm system fitted in their home? Our Spec Connected gateway allows your customers to benefit from a 24/7 remote monitoring solution - monitor and manage alarms networks from anywhere. Our free FireAngel app provides instant device updates, with optional notifications and no need to enter the property.

Find out more


According to latest BS 5839-6 standards, for maximum LD1 protection you should fit a smoke alarm in the following rooms: Hallway, Landing, Living Room, Bedroom, Airing / Meter Cupboards, Loft, Garage. A smoke alarm is not recommended for installation in a kitchen, you should install a heat alarm in kitchens.

For further guidance on BS 5836-6, please visit our Standards and Regulations Section.

A Grade D1 system is required for:
– New or materially altered dwellings, up to three storeys with no floor exceeding 200 m2.
– Existing dwellings with poor or inadequate fire protection, up to three storeys with no floor exceeding 200 m2.
– Individual dwelling units of two or more rooms in Houses in Multiple Occupation (HMOs) of one or two-storeys, with no floor exceeding 200 m2.

There are three Levels of Detection (LD). Generally the greater the fire risk the more comprehensive the system should be.
LD1 = Maximum Protection. Alarms in all circulation spaces that form part of escape routes and all areas where a fire might start.
LD2 = Medium Protection. All circulation spaces and escape routes (e.g.hallways and landings) are covered together with a provision of higher fire risk areas ( and living rooms).
LD3 = Minimum Protection. Alarms in all circulation spaces that form part of escape routes.
* Ensure that a Grade D1 system is adequate for the dwelling you are installing the alarms in. You can obtain further information from your local fire service or building control department at your local council offices.

Our advanced Smart RF technology allows smoke, heat and CO devices to be interlinked wirelessly. When alarms are interlinked they are able to communicate and will alert at the same time if one of the alarms detects danger – when one sounds, they all sound. In the case of wireless interlink, this communication is in the form of Smart RF technology, which means there’s no need to run cables between the alarms. The FireAngel Specification range of alarms allows a network to be easily extended to include devices across an entire property. For example, a network of 6 x smoke alarms, 2 x heat alarms, 4 x carbon monoxide alarms and a Spec Connected Wireless Gateway will be completely secure and protect a whole property.

If you choose not to add a Gateway upon initial installation, you can add a Gateway to an existing network at any time in the future – this will allow for remote monitoring of devices as the Gateway will communicate with the FireAngel App using an internet connection, however, if the internet connection fails or cuts out the alarms will still continue to work and protect property, no internet connection means you will no receive any push notifications whilst the internet is not working.

Whilst BS 5839-6 has previously been split into six varying Grades, each outlining the level of protection appropriate for certain properties and their corresponding levels of risk, the new update has altered the six sections, removing Grade B and Grade E, whilst Grade D and Grade F have been split into Grade D1 / Grade D2 and Grade F1 / Grade F2 respectively. Grade C has been revised and its recommendations expanded.

The 2019 grading system is as follows:

Grade A

Separate detectors, sounders and central control and indicating equipment with back-up power supply that conforms to British Standards BS EN 54.

Grade C

Separate detectors and sounders that are mains powered with back-up power supply and central control equipment.

Grade D1

A system of one or more mains powered detectors, each with a tamper‑proof standby supply consisting of a battery or batteries (such as FireAngel’s SM-SN-1 and HM-SN-1 alarm).

Grade D2

A system of one or more mains-powered detectors, each with an integral standby supply consisting of a user‑replaceable battery or batteries. (such as FireAngel’s SW1-PF-T and HW1-PF-T alarm).

Grade F1

A system of one or more battery-powered detectors powered by a tamper‑proof primary battery or batteries (such as FireAngel’s ST-622T, ST-750 alarm).

Grade F2

A system of one or more battery-powered detectors powered by a user‑replaceable primary battery or batteries. (such as FireAngel’s SB1-T alarm).
Please note: Grades B and E are no longer defined in BS 5839-6:2019.