Define Fire. Explain the Fire Detection and Fire Notification Systems in brief.

Fire is a chemical reaction involving the rapid oxidation of a combustible material, releasing heat, light, gases, and various byproducts such as smoke. It occurs when three essential elements — fuel, heat, and oxygen — combine in appropriate proportions. This is commonly referred to as the "Fire Triangle." When one of these elements is removed, the fire can be extinguished. Fire, although a useful tool in various applications, becomes a significant hazard when uncontrolled, leading to destruction of property, injuries, or loss of life. Therefore, effective fire detection and notification systems are critical components of facility management to ensure early warning, safe evacuation, and timely intervention.

Fire Detection Systems:

Fire detection systems are designed to identify the presence of fire through indicators such as smoke, heat, flame, or gas. These systems form the first line of defense by triggering alerts at the initial stages of fire development. The primary components of fire detection systems include sensors, control panels, and output devices.

1. Smoke Detectors:
   Smoke detectors sense the presence of smoke particles in the air. They are classified into three main types:

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