Sep 25, 2017 Last Updated 11:00 PM, Sep 10, 2017

Sprue Safety Products discusses connectivity within the home

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Jeremy Roberts, Sales Director at Sprue, discusses how SONA is utilising the technology used and trusted by the UK Fire and Rescue Service to drive the main smoke alarm market towards a simplified alternative.

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It is common knowledge that the utilisation of smoke alarms helps to save lives and homes. However, traditional solutions, such as ionisation and optical smoke alarms, offer contrasting benefits that can make correct specification confusing and difficult.

The Fire and Rescue Service is called out to approximately 50,000 domestic fires per annum, leading to almost 500 deaths and 11,000 injuries caused by fire. From these statistics it is quite simple to see the importance of smoke alarms, meaning correct selection is absolutely essential.

The two most common forms of domestic smoke alarms used throughout the UK housing stock are ionisation and optical – both offering different benefits.

Ionisation

Historically, ionisation smoke alarms have been the most popular. Although ionisation smoke alarms are very sensitive to small particles of smoke produced by fast-flaming fires – such as chip pan fires – they do have a tendency to generate a large number of nuisance alarms – mostly from toasters – which can lead to end users removing the battery or completely removing the smoke alarm.

This can be seen clearly in recent statistics from the Department for Communities and Local Government, that revealed a smoke alarm was present in 19% of all dwelling fires in the UK but did not operate.

Optical

Optical smoke alarms are more responsive to fires that begin with a long period of smouldering – such as fires caused from cigarettes – and are less likely to cause nuisance alarms. However, they can be less sensitive to fast-flaming fires that initially generate lots of heat but limit plumes of smoke.

With the contrasting benefits of each alarm, it is clear to see why specification can be difficult. An optical alarm is better at identifying smouldering fires, whereas ionisation smoke alarms outperform optical alarms when monitoring fast-flaming fires but are far more prone to nuisance alarms.

Multi-sensing

To combat this, more and more specifiers and contractors are moving towards the use of multi-sensing alarms, which combine optical sensing with thermal enhancement – also known as Thermoptek Multi-sensor – for detection of fast-flaming and slow-smouldering fires in a single alarm. The alarm constantly monitors for temperature change within the room and if a sudden rise of temperature is detected the sensitivity of the alarm is adjusted and provides a significantly faster reaction to both fire types.

Significantly, SONA is making this premium protection available at a cost effective price with the launch of its concise range of smoke, heat and CO alarms, all of which utilise thermoptek technology.

The benefit of using a Thermoptek multi-sensor smoke alarm not only offers specifiers the sensing benefits of both ionisation and optical alarm technology but also significantly reduces the potential of nuisance alarms. In addition, the alarm utilises a sealed-for-life battery back-up that is not constantly recharged via mains powers.

Smoke alarms can save lives, so it is vitally important that specification of the correct solution is kept simple.

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