Fire alarms are devices that are installed in a structure or an area that alert occupants to the presence of a fire by emitting an audible or visible signal. Depending on the technology, it may be fully automatic, semi-automatic, or manual. Buildings, industrial facilities, markets, offices, residences, public spaces, and […]

  1)  There are 5 different classes of fire ● Class A: includes organic materials like wood, paper, fabric, and coal. ● Class B: flammable liquids like petrol or gases like gasoline. ● Class C: Electrical failures in wiring, electronics, and appliances ● Class D metals such as sodium, titanium, […]