SB1-R smoke alarm with replaceable battery, red packaging, and Grade F2 label.

SB1-R smoke detector on a wooden table, lounge background blurred.

SB1-R smoke alarm on a white ceiling near wood.

SB1-R installation: insert battery, mount baseplate, and attach the SB1-R unit.

White round FireAngel SB1-R smoke alarm with central button and indicator light.

SB1-R smoke detector with box, batteries, and manual placed on wood beside a potted plant.

SB1-T

Optical Smoke Alarm

Name: SB1-R
Brand: FireAngel
SKU: SB1-T
Availability: InStock

Product description

Our SB1 optical standalone smoke alarm is ideal for grade F2 installations where cost is a priority and basic fire protection is required.

Optical alarms are recommended in the British Standard BS 5839‑6 for installation in circulation areas such as hallways and landings.

1 year replaceable battery
10 year product life
For use in hallway, landing, living room, dining room and bedroom
Optical sensor as recommended by BS 5839-6
BS EN 14604:2005+AC:2008
Grade F2 – Suitable for low-cost budget installations requiring basic fire protection
Easy installation – A quick and easy solution that provides instant protection with no interlinking required

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GET IN TOUCH PRODUCT SUPPORT

Our SB1 optical standalone smoke alarm is ideal for grade F2 installations where cost is a priority and basic fire protection is required.

Optical alarms are recommended in the British Standard BS 5839‑6 for installation in circulation areas such as hallways and landings.

Installation & Setup

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

Installation guide

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Maintenance guide

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Resources

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

Product manual

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Datasheet

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Related FAQs

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.

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 alarms do I need to install in my private rental property?

For maximum protection for private rental properties smoke alarms must be installed on every floor where there is living accommodation (e.g., bedrooms, living rooms, hallways)
Heat alarms should be installed in kitchens and areas prone to false alarms.
Carbon monoxide alarms must be fitted in rooms with solid fuel appliances (e.g., wood-burning stoves, coal fires). Consider installing interconnected alarms to increase safety, especially in larger properties or properties with multiple tenants.

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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.