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An **ABC type fire extinguisher** is a multi-purpose extinguisher used to combat Class A (ordinary combustibles like wood and paper), Class B (flammable liquids like petrol and oil), and Class C (flammable gases like propane) fires. It uses **monoammonium phosphate**, a dry chemical powder that smothers flames and interrupts the chemical reaction. This extinguisher is ideal for homes, offices, factories, and vehicles due to its versatility. It is easy to use, requires minimal maintenance, and provides effective fire control. ABC extinguishers are usually red with a pressure gauge and operate by the **PASS** technique—Pull, Aim, Squeeze, and Sweep.