Fire Alarm Systems and Detectors in London

Fire alarms and detectors have the ability to save lives. They are often a legal requirement in
large commercial and public buildings, such as schools, hospitals, libraries, shops and offices.It is vital to ensure your business or home is running safely and smoothly by ensuring that you
have an upgraded fire detection and alarm warning system installed. Here at Firenso London,
we will work with you to identify which fire alarm is best suited to your building and which
system will be most effective.

Practical fire detection and alarm warning systems are a prime component of safety and risk
management for any commercial business, buildings or multi-occupied property in London
and throughout the UK. As a qualified and responsible business, you will need to have a fire
detection service which is up to standard. You are required to prove that your system is
working efficiently and is regularly maintained. For this purpose, a fire risk assessment must
be carried out before any building planning or design installation.

Every Fire Alarm System operates on the same basis, if the fire detector detects heat or
smoke or if someone breaks a glass unit system (manual breakpoint), then an alarm will
sound to warn everyone inside the building that there may be a fire and may need to evacuate
the premises. The choice of which fire alarm system you need depends on the building
structure, the purpose and usage of the building combined with the current legislation. Some
alarm systems may even incorporate remote signalling equipment, which would alert the fire
brigade via a central station.

Different types of Fire Alarm Systems

At Firenso London, we break down our fire alarm systems into two main categories:
Conventional and Addressable. Fire alarm systems can differ, but generally these two
systems are the most widely used.


Conventional fire alarm systems use a number of call points. The fire detectors are wired to
the Fire Alarm Control Panel in specific zones through the building. A zone is a circuit and
generally you would wire a circuit per floor or compartment, conventional fire alarms work
with 2 or more zones. With a conventional system, there is no way of locating the exact
location of the fire. By wiring your conventional system into different zones, you can get a
general idea of where the fire is.

The reason for having zones, is to give you a general idea as to where the fire has started. This is important information for the fire brigade, building management and the safety and evacuation of those occupying the building. Zones are a good indicator to locate the general area of the fire. For example, if you have two floors, you could wire the first floor as ‘zone 1’ and the second floor as zone 2. If the fire was to occur in zone 1 then you would know that the fire is somewhere on the first floor. Conventional fire alarm systems are generally cheaper to buy but may be more expensive to install. This is because each device that is connected needs its own wire per zone.


An addressable fire alarm system is connected in a series of loops. Smoke detectors, call
points and sounder alarms are all connected to these loops, making wiring easier. The system
is much more precise when compared to a conventional system. Every individual detection
device has its own identification address, so when a fire is detected by that device, the exact
location can be transmitted to the addressable fire alarm panel. This enables you to track and
locate the fire instantly. The addressable system has very specific information that can also
aid in the monitoring and control of sprinklers, fire doors and system shut-downs.
Addressable systems are more suited to larger and complex buildings with many floors. As
well as specific location points, another key benefit of this system is that they are less prone
false alarms. This is because the control panel or the device is efficiently programmed to
differentiate between real fires and false alarms.

In conclusion, the addressable fire alarm unit is much more effective for larger buildings and
establishments. It is safer for larger areas as it saves valuable time when detecting a fire and
significantly helps to prevent costly damage caused by the fire. It’s cheaper and much easier
to install than the conventional system. Addressable systems are becoming much more
favourable because of the latest technology programming and the ability to access the system
remotely over the internet. It also has the ability to enable other systems to command and

For smaller buildings, the conventional system is more favourable. It is a cost-effective
system for smaller areas and zones. Conventional fire alarm systems are fully efficient and
will meet the functional needs of smaller premises, where the addressable system may not be
deemed necessary or relevant to your needs.

Here at Firenso London, we can come out and assess your property or building and give you
a full evaluation of your fire system needs and discuss the options available to you. We serve
all of London and the surrounding areas.