FireAngel ST-750T smoke alarm with 10-year battery life shown in front of packaging.

A person installs or removes an ST-750T smoke detector from a ceiling mounting.

Technical drawing of ST-750T, a circular object 130mm wide and 34mm thick.

Minimalist bedroom with a low ST-750T bed, round mirror, and modern neutral décor.

Side view of the ST-750T, a white, round device with vent-like openings on display.

White FireAngel ST-750T smoke alarm with Test/Silence button beside a green plant.

ST-750T smoke alarm, mounting plate, manual, and box on wood beside a potted plant.

ST-750-1

Standalone 10 Year Life Smoke Alarm

Product description

This grade F1 standalone smoke alarm comes with a sealed, tamper proof battery that will last the lifetime of the alarm. Featuring a 10 year sensor life, to ensure your properties remain protected we recommend you advise individuals to replace the unit after 10 years. A quick and easy safety solution that provides instant fire protection with no interlinking required.

10 year sealed lithium battery
Easy installation – A quick and easy solution that provides instant protection with no interlinking required
Thermoptek smoke alarm has been designed to simplify protecting properties against fire
Sensing technology that offers a faster reaction to all types of fires and reduces nuisance alarms
Independent alarm protection – standalone smoke alarms can be installed in a hallway, landing, living room, dining room and bedroom

MoreLess

GET IN TOUCH Product support

Installation & Setup

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

Installation guide

Click the icon to find out more about installing your pro connected app

Maintenance guide

Click the icon to find out how to maintain and test your alarm

Resources

For more technical and specification information on this alarm, view our manual and datasheet.

Product manual

Click the icon to download the product manual

Datasheet

Click the icon to download the product datasheet

Related FAQs

Does this alarm interlink with other smoke, heat and CO devices?

No, the SB1-T is a standalone battery-powered optical smoke alarm with no interlink options. This unit cannot be interlinked with any other products – please see our FireAngel Specification range or our FireAngel Mains with 9V battery backup range, both of these ranges offer hardwire and wireless interlink options.

Where should I install a smoke alarm?

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.

What are the latest BS 5839-6:2019 system grades?

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.

What is FireAngel Themoptek Technology?

Thermoptek technology combines the very latest in optical sensing with a thermal enhancement – it has two separate sensing elements. The different sensing elements constantly monitor for two different by‑products for fires (smoke and temperature). If a rate of temperature rise is detected the sensitivity of the smoke alarm is increased. This provides a quicker response time to all fire types; fast flaming and slow‑burning fires.

See all faqs

Extend Your Protection

Protecting your properties and tenants is easier than ever with our range of smoke, heat, and carbon monoxide alarms. To ensure complete coverage, it’s essential to make sure you’re installing best practice and ensure compliance with your regional fire & CO safety laws.

For added peace of mind, upgrade to our Specification Range. These smart alarms, designed for social housing, can be interlinked (via hardwire or wireless) so when one alarm is triggered, all alarms in the property sound. Landlords can monitor and manage alarms remotely via the FireAngel Connected app, receiving device data and notifications without needing access to the property. The free app also allows for easy testing and instant notifications, showing the status of alarms, e.g. if they’ve been removed or need maintenance.

Get in touch today to see how our FireAngel Connected solution can support you and your tenants.

SW1-PF-T

Optical Smoke Alarm with Push Fit Base

We understand cost can be a huge factor for some projects, our mains 9V range offers a cost...

HW1-PF-T

Kitchen Heat Alarm with Push Fit Base

We understand cost can be a huge factor for some projects, our mains 9V range offers a cost...

ST-622T

10 Year Thermoptek® Smoke Alarm

This battery powered standalone Thermoptek multi-sensor smoke alarm has been designed to simplify...

CW1-PF-T

Carbon Monoxide Alarm with Push Fit Base

We understand cost can be a huge factor for some projects, our mains 9V range offers a cost...

SM-SN-1

Specification 10 Year Thermoptek Smoke Alarm, Mains Powered

Designed with installers in mind, this compliant, flexible, easy to fit range delivers advanced...

HM-SN-1

Specification 10 Year Kitchen Heat Alarm, Mains Powered

Designed with installers in mind, this compliant, flexible, easy to fit range delivers advanced...

See more products

Get in touch

Want to discuss how FireAngel can help you? Fill in a short form and book a call to speak to our dedicated trade support team.

Standalone 10 Year Life Smoke Alarm

Product description