A fire extingusher is a portable container of chemicals that can be discharged in a jet to put out a fire. There are three classes of fire exinguishers, A, B, and C.
Class A extinguishers are used for putting out general combustibles such as wood or paper. Class B extinguishers are intended for use on liquids or grease. Class C extinguishers are used on electrical fires.
Halon fire exinguisher