What Is a Fire Alarm System? Your fire alarm system consists of different devices such as heat and/or smoke detectors, and pull stations, which signal to a control panel that a fire has been detected and then alerts building occupants to evacuate through audible and/or visual signalling devices.

1. Overview of Fire
Alarm Systems
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2. What is the Fire alarm system ?
A fire alarm system has a number of devices working together to detect and
warn people through visual and audio appliances when smoke, fire, carbon
monoxide or other emergencies are present.
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3. Why use a Fire Alarm System?
• A fire alarm system has a number of devices working together to detect and
warn people through visual and audio appliances when smoke, fire, carbon
monoxide or other emergencies are present.
• The effectiveness of the fire detection and alarm system depends on the
stage of the fire at which it is operated. In order for all the occupants to
escape without too much difficulty, an early alarm should operate before the
escape routes becomes smoke-logged to such an extent as will cause
occupants to have difficulty finding their way out of the building.
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4. Why use a Fire Alarm System?
• Fire Alarm Systems are used to protect life and property.
It protects by:
• detecting a fire at an early stage.
• alerting and evacuating occupants.
• notifying the relevant personnel.
• activating auxiliary functions e.g. smoke controls, lift homing etc.
• identifying and guiding fire fighters.
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5. What is a Fire Alarm System made up of?
Components forming the System -9 Items
• Smoke / Heat Detectors (Detectors Fire)
• Alarm Panels (Control and Indicating Equipment)
• Alarm Bells (Fire Alarm Devices)
• Manual Call Points
• DECAM Panel (Fire Services Signalling Transmitter)
• DECAM Station (Alarm Monitoring Station)
• Extinguishing Panels (Control for automatic fire protection equipment)
• Gas/Sprinkler (Automatic fire protection equipment)
• Charger/Battery (Power Supply Equipment)
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6. What is a Fire Alarm System made up of?
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7. Principle of Operation
• The primary purpose of a fire indicator panel is to monitor each circuit, zone
or point for any condition (alarm signal or other abnormal condition);
display the status of that condition and to operate any required output or
outputs according to the approved design of the system. These outputs are
typically for the purpose of warning occupants on a fire alarm signal, notify
the fire brigade, control the spread of heat, smoke or fire; or used for a wide
variety of other purposes.
Before I go any further its important to define a couple of terms used in this
article, to provide both context and and explanation of their meaning;
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8. Types of Fire Alarm Systems in use today
• Non-Addressable System
 also commonly known as “conventional”
 fire detectors are wired to the panel in groups known as zone fire zone
 identification of alarm status by zone identification zone
 fire detectors indicates either “Fire”or “Normal”status only
 system only indicate events but without event recording feature
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9. Typical Non-Addressable Fire Alarm System Configuration
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10. Types of Fire Alarm Systems in use today
• Addressable System
 each fire detector is provided with an address
 identification of alarm status by zone and by address
 fire detectors indicates various condition such as smoke level
 indicates and records system events.
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11. Typical Addressable Fire Alarm System Configuration
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12. Types of Fire Alarm Systems in use today
Hybrid System (conventional + addressable)
 a combination of features from both addressable and non-addressable
systems.
 either built from a basic conventional system with add-on hardwire
addressable features.
 or built from an addressable system with conventional module.
 event recording and alarm management feature.
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13. Typical Hybrid Fire Alarm System Configuration
(conventional with hardwire addressable add add-on)
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14. Thank You
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