Fire Alarms

There is a huge choice of fire detectors on the market and choosing the correct one is crucial for your safety

Fire detectors can detect a range of factors associated with a fire, such as smoke, heat, combustion gas or, ultraviolet and infrared radiation. Even if one of these elements is detected, the fire alarm system will be triggered.

Conventional, four-wire or fire alarm systems have been extensively used in smaller properties such as shops and restaurants for many years.

Less expensive to purchase than other types of alarm system, they work by dividing the building into a number of detection zones, with the detectors and call points within each zone hardwired on dedicated circuits to the control panel. There may be multiple detectors on a single zone. A separate two-core, fire-protected cable for each alarm sounder or bell is needed because they are wired to different loops.

If a detector is activated, the control panel identifies the circuit that contains the triggered device and so indicates the zone from which the fire alarm has originated, but the area then has to be manually searched to pinpoint the individual device.

Designed for smaller operations, two-wire fire alarm systems are based on standard conventional system technology. In a two-wire system, the detectors, call points and alarm devices for each zone are wired on the same set of two-core zone cables back to the control panel, enabling it to use a single circuit per zone both for detection and to power the sounders or sirens.

Although two-wire systems cost more to purchase than four-wire systems, they are quicker, more flexible and less expensive to install. Two-wire systems also provide more flexibility in operation and have additional functionality such as fault conditions, isolation and detector recognition.

Analogue-addressable fire alarm systems give details on individual detectors, whereas conventional systems only give information about specific circuits or zones.

Addressable or “intelligent” fire alarm systems are designed for large commercial premises and more complex networked systems since they are much more expensive and more complicated than conventional two or four-wire systems which have increased flexibility, intelligence, speed of identification and scope of control.

In addressable systems, different types of initiating devices are wired in one or more single loops around the premises. This requires less cabling than conventional systems and each detector or call point can have its own unique address.

The fire control panel receives information and status reports from each device and indicates its exact location if there is a fire, fault, smoke, heat or contamination.

 

More expensive to buy but more flexible, cheaper and much quicker to install, wireless or battery-powered radio-linked fire alarm systems provide just as much protection as conventional wired systems and are useful when wired installations are not suitable (such as in grade-listed properties where wiring may be prohibited). There are no cables between the detection devices and the control panel, so doing away with the need for long-term cable tests.

Wireless systems need to comply with EN54-25 standard. Increasingly sophisticated, today’s wireless fire alarm systems are much more reliable than the ones that originated in the 1980s and have multi-frequency links to eliminate signal blocking and collision, allowing a high margin of signal strength to be maintained.

Although technically a detection solution, aspirating smoke detection systems are extremely sensitive and can detect very small or smouldering fires far quicker than other systems.

Aspirating systems use a fan to draw in air from around a building via a network of sampling pipes and sampling holes. The air is then passed through a highly sensitive precision detector that analyses it and generates warning signals of potential fire when it detects smoke particles.

Expensive to install and maintain, these systems are highly sensitive and can detect cool smoke that does not rise to the ceiling, as well as smouldering fires and particles given off by overloaded electrical cables. They are therefore especially useful where early warning is required.




Gaucho Group

“FLR Fire & Security are innovative and bring flexible ideas to enhance security without exceeding budgets. As a trusted and proactive supplier, FLR Fire & Security provides Gaucho with complete peace of mind allowing us time to focus on other projects.”

Colin Williams, Property & Estate Manager

2018-10-15T13:37:54+00:00

Colin Williams, Property & Estate Manager

“FLR Fire & Security are innovative and bring flexible ideas to enhance security without exceeding budgets. As a trusted and proactive supplier, FLR Fire & Security provides Gaucho with complete peace of mind allowing us time to focus on other projects.”
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Southwark District Scout Council

"We are extremely grateful for your professionalism, your knowledge on the best suited systems to our needs is exceptional. Thank you for all of your work."

Liz Fricker, DC Southwark

2019-02-19T16:40:25+00:00

Liz Fricker, DC Southwark

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"We are extremely grateful for your professionalism, your knowledge on the best suited systems to our needs is exceptional. Thank you for all of your work."

Hexagon Classics

"FLR Fire & Security come highly recommended and in our opinion have mastered the art of ensuring their service is second to none! Taking the time to understand our business and requirements was the first goal. Gaining our trust became their second. And continuously delivering a first class and reliable service is a goal they execute with ease. FLR Fire & Security are consistently up to speed and on the pulse with your account and all staff are clearly well trained!"

Samantha Chow, PA Paul Michaels

2018-10-15T13:29:04+00:00

Samantha Chow, PA Paul Michaels

"FLR Fire & Security come highly recommended and in our opinion have mastered the art of ensuring their service is second to none! Taking the time to understand our business and requirements was the first goal. Gaining our trust became their second. And continuously delivering a first class and reliable service is a goal they execute with ease. FLR Fire & Security are consistently up to speed and on the pulse with your account and all staff are clearly well trained!"
Huffins Edwards & Sharp

Huggins, Edwards & Sharp LLP

"We have used FLR Fire & Security’s services for many years to look after our CCTV system at this site and have been very pleased with the level of service provided, response times to issues and their expert knowledge in this field. Highly recommended."

Phil King, Commercial Property Manager

2018-10-15T13:21:10+00:00

Phil King, Commercial Property Manager

Huffins Edwards & Sharp
"We have used FLR Fire & Security’s services for many years to look after our CCTV system at this site and have been very pleased with the level of service provided, response times to issues and their expert knowledge in this field. Highly recommended."

Tates of Sussex Garden Centres

“Our Garden Centre sites are all very different, meaning they require bespoke solutions for security surveillance and monitoring. We have built a good working relationship with FLR Fire & Security and their engineers who have helped us work  through some challenging issues. We are pleased to recommend FLR Fire & Security.”

John Dunkling, Loss Prevention Officer

2018-10-15T13:16:16+00:00

John Dunkling, Loss Prevention Officer

“Our Garden Centre sites are all very different, meaning they require bespoke solutions for security surveillance and monitoring. We have built a good working relationship with FLR Fire & Security and their engineers who have helped us work  through some challenging issues. We are pleased to recommend FLR Fire & Security.”

Blakeney Leigh Ltd

"We have been working with FLR Fire & Security on several projects recently and find their knowledge and experitse invaluable. They have delivered all projects on time and to the agreed budget. Our clients have been extremely happy with the services. We have no hesitation is recommending them."

Neal Gordon, Director

2018-10-15T12:51:55+00:00

Neal Gordon, Director

"We have been working with FLR Fire & Security on several projects recently and find their knowledge and experitse invaluable. They have delivered all projects on time and to the agreed budget. Our clients have been extremely happy with the services. We have no hesitation is recommending them."
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Teltrac Navman

"I would recommend FLR Fire & Security as a service provider, as they provide a professional and transparent service."

Laura Orange, Director of Stolen Vehicle

2019-02-19T16:43:09+00:00

Laura Orange, Director of Stolen Vehicle

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"I would recommend FLR Fire & Security as a service provider, as they provide a professional and transparent service."
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Alderwood Primary School

"We use FLR Spectron for CCTV,  computer and data installations. Each time they have given us competitive quotations, followed by a professional installation. They are always there for advice and are now our first point of call for any CCTV,  computer and data work."

Les Goodrich, Premises Manager

2019-02-19T16:07:54+00:00

Les Goodrich, Premises Manager

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"We use FLR Spectron for CCTV,  computer and data installations. Each time they have given us competitive quotations, followed by a professional installation. They are always there for advice and are now our first point of call for any CCTV,  computer and data work."
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The Utranazz Group

"The service we have received has been to a very high standard and from start to finish the whole process has  been professional. All staff have been on hand when needed and have been extremely helpful. I would recommend FLR security to anyone looking for a hi-tech, easy to use CCTV system."

Verity Harfield, PA to Managing Director

2019-02-19T16:20:59+00:00

Verity Harfield, PA to Managing Director

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"The service we have received has been to a very high standard and from start to finish the whole process has  been professional. All staff have been on hand when needed and have been extremely helpful. I would recommend FLR security to anyone looking for a hi-tech, easy to use CCTV system."