Smoke & Heat Alarms

Safe Fire Direct offer the UK's largest and most comprehensive range of smoke and heat alarms all manufactured by the highest regarded brands in the industry. Mains powered, battery powered and low voltage alarms are available for different power requirements. Each alarm in our range has been stringently tested and certified to the latest British Standards so you can be assured of their quality and reliability. Our range includes optical and ionisation smoke alarms, heat alarms and multi-sensor alarms to provide optimum performance in different areas of your property. We also offer alarms which can be radio-interlinked or hard-wire interlinked so that you can create a connected system to provide synchronised warning throughout a building.
  • Our full range of smoke and heat alarms from leading manufacturers, all compliant with the latest British Standards offering a solution for every type of application. If you are looking for battery powered alarms, mains powered alarms or alarms with radio-interlink capabilities, we offer a product to meet your needs. All alarms supplied by Safe Fire Direct meet the requirements of the new Grades under BS5839-6: 2019. Below you will find alarms suitable for Grade D1 & D2 requirements (mains-powered with sealed back-up / replaceable back-up batteries), as well as alarms for Grade F1 & F2 systems (Battery powered sealed longlife / replaceable batteries).

     
  • The Battery Powered Smoke Alarms below are ideal for any domestic property. Easy to install & maintain they offer peace of mind and protection from fires & smoke. Upon detection of Smoke they will produce a loud siren (minimum 85Db from 3 meters) giving you and your family enough warning and time to evacuate the premises. It is a London Fire Brigade recommendation to fit one alarm at the bottom of the staircase and further alarms on each landing. If your home has only one level (storey), fit the alarm between the living area and bedrooms where the alarm will be loud enough to wake you up from sleep.

     
  • Mains-powered smoke detectors and heat alarms suitable for use with BS 5839 Part 6 Grades D, D1, & D2 fire alarm systems.

     
  • Radio-Interlink alarms can often offer both savings in Time and Money. Installation of hard wired devices is not always an option, neither is mains power to a unit, therefore we offer various ranges including Battery Only and Mains Powered Wireless Interlinked devices to suit any requirement.

     
  • Some ranges of smoke, heat and CO alarms (usually mains powered) can be interlinked by running an interconnect wire through each alarm in a single continuous circuit. The alarms must be compatible and from the same manufacturer in order for the interconnection to work correctly. Once connected they form a synchronised system so when one alarm is triggered, all connected alarms will activate to provide warning throughout the building. The below alarm ranges offer the ability to create systems which are compatible for interconnection via a hardwire interlink:

     
  • Optical Smoke Alarms (also known as Photoelectric Smoke Alarms) are designed to "see" smoke offering a fast response to smouldering fires. Ideal for use in Living Rooms, Bedrooms, Hallways and Near Kitchens they are particularly designed to help prevent false alarms.

     
  • Ionisation smoke alarms are designed for detecting fast flaming fires and are ideal for landings.

     
  • Heat alarms respond to changes in temperature rather than smoke. Ideal for kitchens & garages where fumes, dust, or mist may be present.

     
  • Combination alarms and multi-sensor alarms combine multiple sensor types in a single alarm unit to provide faster reaction times, reduced false alarms and coverage of different dangers. We offer smoke alarms combined with thermal sensors (thermally-enhanced optical / multi-sensors) which provide a faster reaction time to all fire types compared to standard optical or ionisation alarms. These alarms also reduce the risk of false alarms because they use a combined algorithm between the sensors to filter out nuisance triggers. Our range also includes carbon monoxide alarms combined with optical smoke or heat sensors (combination alarms) to provide coverage of different risks in a single location and reducing the number of alarm units required.

    From £26.68 Inc VAT
  • The below Smoke & Heat Alarms have a sealed for life battery, and come complete with a full manufacturer's warranty not only giving you excellent protection but also great value for money. These units require no battery changes, the batteries can't be removed by somebody for use in the TV remote, and have tamper free designs which make these products a safe and economic choice.

    From £11.00 Inc VAT

Optical Smoke Alarms

Optical smoke alarms (also known as photoelectric smoke alarms) use light scatter technology to detect smoke. They are best for detecting larger particles of smoke which are caused by slow-burning, smouldering fires.

They are best suited for installation on escape routes and in main circulation areas. They can be installed near kitchens as they are less prone to false alarms from cooking fumes than ionisation sensors. They should not be installed directly in kitchens, garages or near poorly ventilated bathrooms to avoid nuisance alarms from fumes or steam.

Ionisation Smoke Alarms

Ionisation smoke alarms use a small volume of radioactive material. They work by ionising air between electrodes which creates a small consistent current inside the sensing chamber. Smoke entering the chamber disrupts the current and signals the alarm to trigger. They are very sensitive to smaller particles of smoke which are produced by faster flaming fires.

They are most suited for installation on landings, however it is recommended that optical or multi-sensor alarms are used instead of ionisation type sensors where possible because of their susceptibility to false alarms. They should not be installed in hallways or near kitchens as they are particularly prone to nuisance alarms caused by cooking fumes.

Multi-Sensor Alarms

Multi-Sensor alarms contain two separate sensors - optical smoke and thermal heat sensors - which monitor both signals and use an algorithm of the combined signals to trigger an alarm. They provide a much faster response to most fire types and are less prone to false alarms associated with individual optical or ionisation smoke alarms.

They are recommended for installation in main circulation areas (living rooms), escape routes, hallways and bedrooms. While they do contain a thermal heat sensor, they should not be installed directly in kitchens or garages and should still be treated predominantly as smoke alarms.