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.

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

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

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

ST-750

Thermoptek® Smoke Alarm, 10 Year Life-Time Battery

Name: ST-750
Brand: FireAngel
SKU: ST-750
Availability: InStock

Product description

If you’re looking for a replacement alarm previously fitted by Fire & Rescue Services, the ST‑750 is ideal and in most instances will not require changing the baseplate.

FireAngel are committed to developing technologies which provide the highest levels of fire detection in your home. Thermoptek technology combines the very latest in optical sensing with thermal enhancement for a rapid response to fire, providing vital time for you and your family to react.

The alarm comes with a sealed, tamper proof battery that will last the lifetime of the alarm. The sensor life is 10 years, so to ensure your home remains protected we recommend you replace the alarm after 10 years.

Testing your smoke alarms no longer requires a step ladder. FireAngel have you covered with a large central push button. As well as allowing easy testing, this large button also activates our Sleep Easy function which silences low battery chirps for 8 hours ‑ giving you a peaceful night’s sleep.

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PRODUCT SUPPORT

If you’re looking for a replacement alarm previously fitted by Fire & Rescue Services, the ST‑750 is ideal and in most instances will not require changing the baseplate.

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

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

Click the icon to download the product manual

Datasheet

Click the icon to download the product datasheet

Related FAQs

How do I stop false alarms from my smoke/heat alarm?

Ensure alarms are installed in appropriate locations. Smoke alarms should be kept away from kitchens and bathrooms where cooking fumes and steam can trigger false alarms.
Clean alarms regularly to remove dust or debris that could cause false alarms.
Consider installing heat alarms in areas prone to false alarms, such as kitchens and garages.

Do smoke alarms detect carbon monoxide?

No – this is a smoke alarm only and does not detect carbon monoxide. For CO protection, install a dedicated carbon monoxide alarm such as the FireAngel FA6829S alongside your smoke alarms. For combined protection in a single unit, consider the FireAngel SCB10-R combination smoke and CO alarm.

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.

Can Multi-Sensor alarms be installed in kitchens?

No, FireAngel Multi-Sensor alarms are not recommended for kitchens due to the likelihood of nuisance alarms from cooking fumes. FireAngel heat alarms should be installed in kitchens instead.

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Extend your protection

Protecting your home and loved ones is easier than ever with our range of smoke, heat, and carbon monoxide alarms. To ensure complete coverage, it’s essential to place the right alarm in the right location. Check out what alarms are right for you on our help to buy quiz.

For even greater peace of mind, consider upgrading to our Pro Connected Range. These smart alarms offer wireless interlinking, meaning if one alarm is triggered, all alarms in your home will sound. Plus, they can be monitored through our FireAngel Connected smartphone app, whether you’re at home or away.

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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.

Thermoptek® Smoke Alarm, 10 Year Life-Time Battery

Product description